316 COLUBRID^i;. 



1. Geophis poeppigii. 



Rabdosoma poppigi, Jan, Arch. Zool. Anat. Phys. ii. 1862, p. 11, and 

 Icon. Gen. 10, pi. iii. fig. 4 (1865). 



Eye very small, much shorter than its distance from the mouth. 

 Snout rounded. Eostral rather large, once and a half as broad as 

 deep, the portion visible from above about half as long as its 

 distance from the frontal; internasals andpraefrontals much broader 

 than long ; frontal much broader than long, as long as its distance 

 from the rostral, much shorter than the parietals ; supraocular 

 small; lorcal nearly twice as long as deep, shorter than the two 

 nasals together ; one postocular ; six upper labials, third and fourth 

 entering the eye, fifth largest ; a single i)air of chin-shields, in 

 contact with four lower labials and separated from the symphysial. 

 Scales smooth, in 15 rows. Ventrals 170; anal entire; subcaudals 



? Brown above ; barred brown and white beneath ; on the 



anterior part of the body the white bars of the ventral surface 

 extend some way up the sides ; upper lip and temporal region white. 



Total length 570 millim. 



Brazil. 



2. Geophis semidoliatus. 



Rabdosoma semidoliatum, Bum. ^ Bihr. vii. p. 93 (1854). 

 Rbabdosoma semidoliatum, part., Giinth. Cat. p. 10 (1858). 

 Geophis semidoHatus, Peters, Mon. Berl. Ac. 1859, p. 276 ; Bocourt, 



Miss. So. Mex., Rept. p. 584, pi. xxxi. tig. 7 (188.3) ; Gunth. Biol. 



C.-Am., Pept. p. 90 (1893). 

 Catostoma semidoliatum, Cope, Proc. Ac. Philad. 1860, p. 339. 

 Elapoides semidoliatus, Jan, Arch. Zool. Anat. Phys. ii. 1862, p. 22, 



and Icon. Gen. 12, pi. ii. tig. 1 (1865). 



Maxillary extending considerably beyond the palatine in front, 

 the first tooth below the nostril. Eye extremely small, its length 

 hardly half its distance from the mouth. Snout rounded, project- 

 ing. Rostral rather large, a little broader than deep, the portion 

 visible from above measuring one third to two fifths its distance 

 from the frontal ; internasals a little broader than long, about two 

 fifths the length of the pra;frontals, which are nearly as long as 

 broad ; frontal as long as broad, or slightly broader than long ; as 

 long as its distance from the rostral, much shorter than the parietals ; 

 supraocular small ; loreal once and two thirds to twice as long as 

 broad ; a minute postocular, sometimes fused with the supra- 

 ocular ; five upper labials, third entering the eye ; four lower labials 

 in contact with the anterior chin-shields, which are longer than the 

 posterior and separated from the symphysial. Scales in 15 rows, 

 everywhere perfectly smooth. Ventrals 147-174; anal entire; 

 subcaudals 24-28. More or less regularly barred black and yellow 

 or orange above, uniform yellowish beneath ; head and uape black, 

 with a yellowish bar across the temples and the parietal shields. 



Total length 330 millim. ; tail 30. 



Mexico. 



