280 CLASS XV. 



surface of the snout prolonged above the mouth. Most of the 

 species are from America, but some others are also met with in the 

 Indian Archipelago. One species occurs in Greece and in Western 

 Asia. 



Typhlops SCHN., Cuv., MERE., SCHLEGEL. 



Note. Characters of the family. The author of the genus is 

 J. G. SCHNEIDER, Hist. Amphib. n. 1801, p. 339. 



A. With teeth in lower jaw; upper jaw edentulous. 



Catodon DUM., BIBR. Head depressed. Eyes subindistinct. 

 Stenostoma DUM., BIBR. Head round, rotundate. Eyes distinct. 



Sp. Typhlops nigricans SCHL., Abb. Tab. 32, figs. 21 24; Cape of Good 

 Hope ; Typhlops undecim-striatus Cuv., Stenostoma albifrons DUM. ; Bra- 

 sil, &c. 



B. With lower jaw edentulous. 

 h With head scaly. 



Cephalolepis DUM. and BIBR. 

 Sp. Typhlops squamosus SCHLEG. Abb. Tab. 32, figs 9 12, Cayenne. 



ft With head scutate. 



a) With nostrils lateral. 

 Cathetorhinus DUM. and BIBR. 

 Typhlops DUM. and BIBR. 



Sp. Typhlops reticulatus Cuv., GRAY, Anyuis reticulata L., Typhlops lumbri- 

 calis SCHLEG. Abb. Tab. 32, figs, i 4; BEETHOLD Neue oder seltene 

 Amphibienarten, Gottingen, 1842, p. 8, Tab. I. figs, i 3, Diet. univ. 

 d'Hist. not., Kept. PL vn. fig. 3 (under the name of Typhlops lumbricalis), 

 DUM. et BIBR. Erpet. PL 60 ; Surinam, the largest species of this family ; 

 Typhlops "Richard DUM., Typhlops cinereus GUER., Iconogr., Rept. PL 18, 

 fig. 2, Antilles; Typhlops vermicularis MERR., Typhlops Jlavescens LAC. 

 Quadr. ovip. et Serp. n. p. 455, PL 20, fig. i ; Morea, Island of Cyprus, 

 Georgia, &c. 



b) With nostrils inferior. 



Typhlina WAGL., Pilidion DUM. and BIBR. With eyes not con- 

 spicuous. 



Ophthalmidion DUM. and BIBR, 



Onychocephalus DUM. and BIBR. Eyes conspicuous. Rostral 

 scute produced above the head into an elliptic flat disc. 



