There are roughly 235 species of reptiles. Of these, almost half live in the northern areas. Reptiles endemic to Somalia include the Hughes' saw-scaled viper, the Southern Somali garter snake, a racer (''Platyceps messanai''), a diadem snake (''Spalerosophis josephscorteccii''), the Somali sand boa, the angled worm lizard, a spiny-tailed lizard (''Uromastyx macfadyeni''), Lanza's agama, a gecko (''Hemidactylus granchii''), the Somali semaphore gecko, and a sand lizard (Mesalina or Eremias). A colubrid snake (''Aprosdoketophis andreonei'') and Haacke-Greer's skink (''Haackgreerius miopus'') are endemic species.