opinion: OYLER v. BOLES, WARDEN.
  No. 56.
  Argued December 4, 1961.
  Decided February 19, 1962.
  David Ginsburg, acting under appointment by the Court, 365 U. S. 826, argued the cause and filed a brief for petitioners.
  George H. Mitchell, Assistant Attorney General of West Virginia, argued the cause for respondent. With him on the brief was C. Donald Robertson, Attorney General. Fred H. Caplan entered an appearance for respondent.
  Together with No. 57, Crabtree v. Boles, Warden, also on certiorari to the same Court.
  Mr. Justice Clark
  delivered the opinion of the Court.
  The petitioners in these consolidated cases are serving life sentences imposed under West Virginia’s habitual criminal statute. This Act provides for a mandatory life sentence upon the third conviction “of a crime punishable by confinement in a penitentiary.” The increased penalty is to be invoked by an information filed by the prosecuting attorney “immediately upon conviction and before sentence.” Alleging that this Act had been applied without advance notice and to only a minority of those subject to its provisions, in violation respectively of the Due Process and Equal Protection Clauses of the Fourteenth Amendment, the petitioners filed separate petitions for writs of habeas corpus in the Supreme Court of Appeals of West Virginia. Both of their petitions were denied without opinion. Unlike Chewning v. Cunningham, ante, p. 443, here each of the petitioners was represented by counsel at the time he was sentenced. Finding the cases representative of the many recidivist cases that have been docketed in this Court the past few Terms, we granted certiorari. 365 U. S. 810. We now affirm the judgment in each case.
  William Oyler, the petitioner in No. 56, was convicted of murder in the second degree on February 5,1953, which offense carried a penalty of from 5 to 18 years’ imprisonment. Sentence was deferred, and on February 11 his motion for a new trial was overruled. On that same date the Prosecuting Attorney requested and was granted leave to file an information in writing alleging that Oyler was the same person who had suffered three prior convictions in Pennsylvania which were punishable by confinement in a penitentiary. After being cautioned as to the effect of such information, Oyler, accompanied by his counsel, acknowledged in open court that he was the person named in the information. The court then determined that the defendant had thrice been convicted of crimes punishable by confinement in a penitentiary and sentenced him to life imprisonment. In so doing the court indicated that the life sentence was mandatory under the statute and recommended that Oyler be paroled as soon as he was eligible. In 1960 Oyler filed a habeas corpus application in the Supreme Court of Appeals alleging a denial of due process under the Fourteenth Amendment in that he had not been given advance notice of his prosecution as a recidivist which prevented him from showing the inapplicability of the habitual criminal law. The statute was alleged to be inapplicable because he had never been sentenced to imprisonment in a penitentiary although he had been convicted of crimes subjecting him to the possibility of such sentence. He also attacked his sentence on the equal protection ground previously set forth.
  In 1957 Paul Crabtree, the petitioner in No. 57, pleaded guilty to forging a $35 check, which offense carried a penalty of from 2 to 10 years’ imprisonment. Sentence was deferred, and a week later the Prosecuting Attorney informed the court that Crabtree had suffered two previous felony convictions, one in the State of Washington and one in West Virginia. The trial judge, after cautioning Crabtree of the effect of the information and his rights under it, inquired if he was in fact the accused person. Crabtree, who had been represented by counsel throughout, admitted in open court that he was such person. Upon this admission and the accused's further statement that he had nothing more to say, the court proceeded to sentence him to life imprisonment. In 1960 Crabtree sought habeas corpus relief in the Supreme Court of Appeals claiming denial of due process because of the absence of notice which prevented him from showing he had never been convicted in Walla Walla County, Washington, as had been alleged in the information. Like Oyler, he also raised the equal protection ground.
  I.
  Petitioners recognize that the constitutionality of the practice of inflicting severer criminal penalties upon habitual offenders is no longer open to serious challenge; however, they contend that in West Virginia such penalties are being invoked in an unconstitutional manner. It is petitioners' position that procedural due process under the Fourteenth Amendment requires notice of the habitual criminal accusation before the trial on the third offense or at least in time to afford a reasonable opportunity to meet the recidivist charge.
  Even though an habitual criminal charge does not state a separate offense, the determination of whether one is an habitual criminal is “essentially independent” of the determination of guilt on the underlying substantive offense. Chandler v. Fretag, 348 U. S. 3, 8 (1954). Thus, although the habitual criminal issue may be combined with the trial of the felony charge, “it is a distinct issue, and it may appropriately be the subject of separate determination.” Graham v. West Virginia, 224 U. S. 616, 625 (1912). If West Virginia chooses to handle the matter as two separate proceedings, due process does not require advance notice that the trial on the substantive offense will be followed by an habitual criminal proceeding. See Graham v. West Virginia, supra.
  Nevertheless, a defendant must receive reasonable notice and an opportunity to be heard relative to the recidivist charge even if due process does not require that notice be given prior to the trial on the substantive offense. Such requirements are implicit within our decisions in Chewning v. Cunningham, supra; Reynolds v. Cochran, 365 U. S. 525 (1961); Chandler v. Fretag, supra. Although these cases were specifically concerned with the right to assistance of counsel, it would have been an idle accomplishment to say that due process requires counsel but not the right to reasonable notice and opportunity to be heard.
  As interpreted by its highest court, West Virginia's recidivist statute does not require the State to notify the defendant prior to trial on the substantive offense that information of his prior convictions will be presented in the event he is found guilty. Thus notice of the State’s invocation of the statute is first brought home to the accused when, after conviction on the substantive offense but before sentencing, the information is read to him in open court as was done here. At this point petitioners were required to plead to the information. The statute expressly provides for a jury trial on the issue of identity if the accused either denies he is the person named in the information or just remains silent.
  But the petitioners, who were represented by counsel, neither denied they were the persons named nor remained silent. Nor did they object or seek a continuance on the ground that they had not received adequate notice and needed more time to determine how to respond with respect to the issue of their identity. Rather, both petitioners rendered further inquiry along this line unnecessary by their acknowledgments in open court that they were the same persons who had previously been convicted. In such circumstances the petitioners are in no position now to assert that they were not given a fair opportunity to respond to the allegations as to their identity.
  They assert, however, that they would have raised other defenses if they had been given adequate notice of the recidivist charges. It is, of course, true that identity is not the only issue presented in a recidivist proceeding, for, as pointed out by Mr. Justice Hughes (later Chief Justice) when this Court first reviewed West Virginia’s habitual criminal law, this statute contemplates valid convictions which have not been subsequently nullified. Graham, v. West Virginia, supra. A list of the more obvious issues would also include such matters as whether the previous convictions are of the character contemplated by West Virginia’s statute and whether the required procedure has been followed in invoking it. Indeed, we may assume that any infirmities in the prior convictions open to collateral attack could have been reached in the recidivist proceedings, either because the state law so permits or due process so requires. But this is a question we need not and do not decide, for neither the petitioners nor their counsel attempted during the recidivist proceedings to raise the issues which they now seek to raise or, indeed, any other issues. They were not, therefore, denied the right to do so. The petitioners’ claim that they were deprived of due process because of inadequate opportunity to contest the habitual criminal accusation must be rejected in these cases. Each of the petitioners had a lawyer at his side, and neither the petitioners nor their counsel sought in any way to raise any matters in defense or intimated that a continuance was needed to investigate the existence of any possible defense. On the contrary, the record clearly shows that both petitioners personally and through their lawyers conceded the applicability of the law’s sanctions to the circumstances of their cases.
  II
  Petitioners also claim they were denied the equal protection of law guaranteed by the Fourteenth Amendment. In his petition for a writ of habeas corpus to the Supreme Court of Appeals of West Virginia, Oyler stated:
  “Petitioner was discriminated against as an Habitual Criminal in that from January, 1940, to June, 1955, there were six men sentenced in the Taylor County Circuit Court who were subject to prosecution as Habitual offenders, Petitioner was the only man thus sentenced during this period. It is a matter of record that the five men who were not prosecuted as Habitual Criminals during this period, all had three or more felony convictions and sentences as adults, and Petitioner’s former convictions were a result of Juvenile Court actions.
  “#5. The Petitioner was discriminated against by selective use of a mandatory State Statute, in that 904 men who were known offenders throughout the State of West Virginia were not sentenced as required by the mandatory Statutes, Chapter 61, Article 11, Sections 18 and 19 of the Code. Equal Protection and Equal Justice was [sic] denied.”
  Statistical data based on prison records were appended to the petition to support the latter allegation. Crabtree in his petition included similar statistical support and alleged:
  “The said Statute are [sic] administered and applied in such a manner as to be in violation of Equal Protection and Equal Justice therefor in conflict with the Fourteenth Amendment to the Constitution of the United States.”
  Thus petitioners’ contention is that the habitual criminal statute imposes a mandatory duty on the prosecuting authorities to seek the severer penalty against all persons coming within the statutory standards but that it is done only in a minority of cases. This, petitioners argue, denies equal protection to those persons against whom the heavier penalty is enforced. We note that it is not stated whether the failure to proceed against other three-time offenders was due to lack of knowledge of the prior offenses on the part of the prosecutors or was the result of a deliberate policy of proceeding only in a certain class of cases or against specific persons. The statistics merely show that according to penitentiary records a high percentage of those subject to the law have not been proceeded against. There is no indication that these records of previous convictions, which may not have been compiled until after the three-time offenders had reached the penitentiary, were available to the prosecutors. Hence the allegations set out no more than a failure to prosecute others because of a lack of knowledge of their prior offenses. This does not deny equal protection due petitioners under the Fourteenth Amendment. See Sanders v. Waters, 199 F. 2d 317 (C. A. 10th Cir. 1952); Oregon v. Hicks, 213 Ore. 619, 325 P. 2d 794 (1958).
  Moreover, the conscious exercise of some selectivity in enforcement is not in itself a federal constitutional violation. Even though the statistics in this case might imply a policy of selective enforcement, it was not stated that the selection was deliberately based upon an unjustifiable standard such as race, religion, or other arbitrary classification. Therefore grounds supporting a finding of a denial of equal protection were not alleged. Oregon v. Hicks, supra; cf. Snowden v. Hughes, 321 U. S. 1 (1944); Yick Wo v. Hopkins, 118 U. S. 356 (1886) (by implication).
  The other points raised by petitioners, such as the misstatement of the Washington county in which Crabtree was convicted and the fact that Oyler actually served in a Pennsylvania correctional home rather than a penitentiary, all involve state questions with which we are not concerned. Since the highest court of West Virginia handed down no opinion, we do not know what questions its judgment foreclosed. If any remain open, our judgment would not affect a test of them in appropriate state proceedings.
  ^Affirmed.
  W. Va. Code, 1961, § 6130.
  W. Va. Code, 1961, § 6131.
  The statute has been interpreted as requiring only that the previous convictions be such that imprisonment in a penitentiary could have been imposed. State ex rel. Johnson v. Skeen, 140 W. Va. 896, 87 S. E. 2d 521 (1955).
  The record indicates that instead of in Walla Walla Crabtree was convicted in Yakima County, Washington. At the time he was sentenced as a habitual criminal, he admitted that he had previously been sentenced to imprisonment in the State of Washington for a term of 20 years.
  E. g., Moore v. Missouri, 159 U. S. 673 (1895). West Virginia’s statute is a carryover from the laws of Virginia, Va. Code, 1860, c. 199, §§ 25-26, and became its law when West Virginia was organized as a separate State. Since that time it has remained basically the same, save for a 1943 procedural amendment which provided that the statute should be invoked by information filed after conviction rather than by allegation in the indictment upon which the subject was being prosecuted for a substantive offense. In 1912 this Court upheld the constitutionality of the statute. Graham v. West Virginia, 224 U. S. 616 (1912).
  Any other rule would place a difficult burden on the imposition of a recidivist penalty. Although the fact of prior conviction is within the knowledge of the defendant, often this knowledge does not come home to the prosecutor until after the trial, .and in many cases the prior convictions are not discovered until the defendant reaches the penitentiary.
  West Virginia v. Blankenship, 137 W. Va. 1, 69 S. E. 2d 398 (1952).
  W. Va. Code, 1961, §6131.
  The fact that the statute expressly provides for a jury trial on the issue of identity and is silent as to how other issues are to be determined does not foreclose the raising of issues other than identity. This is especially clear in the case of legal issues, such as the petitioners now raise, where a jury trial would be inappropriate.
  The denial of relief by West Virginia’s highest court may have involved the determination that the statute, like its counterpart § 6260, infra, note 11, is not mandatory. Such an interpretation would be binding upon this Court. However, we need not inquire into this point.
  After prisoners are confined in the penitentiary, the warden is granted discretion as to the invocation of the severer penalty. W. Va. Code, 1961, § 6260. Thus the failure to invoke the penalty in the cases cited by petitioners may reflect the exercise of such discretion.
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