176 COLtTBRID.T;. 



1. Stoliczkaia khasiensis. 



Stoliczkia khasiensis, Jerdon, Proc. As. Soc. Benr/. 1870, p. 81; 

 Theob. Cat. Rept. Brit. Ind. p. 205 (1876) ; Boulenr/. Faun. Ind., 

 Hept. -p. 355, ^g. (1890). 



Rostral extremely small, not visible from above ; a pair of small 

 intern asals : a pair of very large pra^f rentals ; frontal bi'oader than 

 long and shorter than the prtefrontals ; supraocular very narrovr ; 

 parietals nearly twice as loug as the frontal ; a small loreal ; a 

 large pra;ocular and two postoculars ; eight upper labials, fifth and 

 sixth entering the eye, eighth much elongate ; temporals small, 

 scale-like ; a single pair of small chin-shields, in contact ■with three 

 lower labials. Scales in 30 rows, dorsals separated by naked skin, 

 laterals larger and juxtaposed. Ventrals 210 ; anal entire ; sub- 

 caudals 115. Purplish brown above ; three or four outer ro^vs of 

 scales and ventrals white with brown edges. 



Total length 670 millim. ; tail 190. 



Khasi Hills. 



a. 2 (V. 210 ; C. 115). Khasi Hills. T. C. Jerdon, Esq. [P.l. 



(Type.) 



5. NOTHOPSIS. 



Nothopsis, Co2w, Proc. Ac. Philad. 1871, p. 201. 



Teeth subequal, about 12 in each maxillar^^ Jlead distinct 

 from neck, covered with small scales above, except a pair of inter- 

 nasals in contact with nasals and rostral, an isolated median 

 frontal, and a pair of small oval parietals, each also entirely sur- 

 rounded by small scales ; nostril in a single nasal ; eye rather 

 small, with round pupil. Body slender, compressed, with small, 

 feebly imbricate, keeled scales ; ventrals well developed, angulate 

 on the sides. Tail rather long ; subcaudals in two rows. 



Central America. 



1. Nothopsis rugosus. 



Nothopsis rugosus, Co2^e, I. c. pi. xvii. figs. 1-7. 



Eostral subtriangular, not visible from above ; frontal shield 

 broad cordate, the apex posterior, divided in front by a median 

 suture ; parietals narrow, separated by a single series of scales ; 

 upper labials small, 12 ; a pair of very small chin-shields. Scales 

 in 29 rows, all strongly keeled. Ventrals 158 ; anal entire ; 

 subcaudals about 65. Brown, yellowish on the sides ; sides with 

 dark brown triangular blotches edged with yellow ; belly yellow^, 

 with small brown spots. 



Total length 381 millim. 



Isthmus of Darien, 



