Mexican beaded lizard generic name "Heloderma" means "studded skin", from the Ancient Greek words "hêlos" (ἧλος)—the head of a nail or stud—and "dérma" (δέρμα), meaning skin. Its specific name, "horrĭdum", is the Latin word meaning rough or rude. The four subspecies of beaded lizard, elevated to full species in 2013, are: Adult beaded lizards range from in length. They are substantially larger than the Gila monster, which only reaches lengths of . The snout-to-vent length of a beaded lizard averages . The average body mass of an adult beaded lizard is , about 45% heavier than the average mass of a gila monster,
Madagascar girdled lizard Madagascar girdled lizard The Madagascar girdled lizard or Madagascar plated lizard ("Zonosaurus madagascariensis") is a species of lizard in the family Gerrhosauridae. It is found in Madagascar, some outlying islands (Nosy Be and the nearby islands; Grande Glorieuse) and the Seychelles (Cosmoledo). This generally common lizard is found in a range of habitat types, including open and degraded humid forest at mid and low altitudes. It also occurs in plantations. On Cosmoledo, it occurs in open shrubland. This oviparous lizard grows to total length. http://ars.els-cdn.com/content/image/1-s2.0-S1055790313002534-fx1.jpg The family Gerrhosauridae shares the strongest evolutionary linkages to Asian and South American Species. However,