HOMALOPSIS. 



373 



of Indian, Geylonese, and Burmese Genera. 



A. Nasals in contact. 



a. Scales keeled. 



'. Parietal shields well developed HOHAXOPSIS, p. 373. 



V . Occiput covered with scales CEBBEKUS, p. 374. 



b. Scales smooth HYPSIEHINA, p. 375. 



13. Nasals separated by an interuasal. 



a. Ventrala smooth. 



'. Body stout, not compressed ; no loreal . . FOEDONIA, p. 378. 

 b'. Body elongate, not compressed ; loreal 



present GEEAEDIA, p. 379. 



c. Body very elongate, compressed CANTOEIA, p. 380. 



b. Veutrals with two sharp keels HIPISTES, p. 381. 



Genus HOMALOPSIS, 



Kuhl, in Ferussac, Bull. Sc. Nat. ii, 1824, p. 81 (part.). 



Maxillary teeth 12, followed by two grooved fangs. Head dis- 

 tinct from neck ; eye small, with vertically elliptical pupil ; head- 

 shields large ; nasals in contact behind the rostral, semidivided, the 



Fig. 109. Head of Humalo-psis buccata. 



cleft extending from the nostril to the first labial ; iuternasal single 

 or divided ; loreal present. Body stout, cylindrical ; scales dis- 

 tinctly striated and keeled, in 37 to 47 rows, without apical pits ; 

 ventrals well developed, not keeled ; tail moderate ; subcaudais in 

 two rows. 



A single species. 



