SYNOPSES AXD DESCRIPTIONS. 103 



Geophis latifroxtalis n. sjj. 



Moderately stout, tapering slightly toward the head, belly broad; head 

 not larger than the neck, depressed, snout broad, rounded, crown a little 

 convex; tail stout, conical, short, near one eighth of the total. Eye very 

 small. Head-shields nine. Rostral broader than high, bent back in a 

 blunt angle on the top of the snout. Internasals small. Prefrontals large, 

 as broad as long, entering the orbit. Frontal short, broader than long. 

 Supraoculars small, nearly as broad as long. Parietals large, about twice 

 as long as broad. Nasal divided. Loreal and anteorbital united. One 

 postorbital (two on one side, lower very small). Temporals 1 + 2, anterior 

 large. Labials six, third and fourth in orbit, fifth largest, and separated 

 from the parietals by a long temporal. Infralabials seven, fourth largest. 

 Submentals two pairs, short, broad; posterior half as long as anterior, 

 scale-like. Scales smooth, lustrous, in 17 rows, medial little longer than 

 broad, outer broader than long. .Ventrals 179, broad. Anal entire. Sub- 

 caudals in two rows, 32 pairs. 



Park uniform dark plumbeous, tinged with purple; margins of scales 

 lighter. Ventrals white, mottled with leaden to uniform leaden. Total 

 length 15^ inches; tail If inches. Found fifty miles south of San Luis 

 Potosi, Mexico, by Dr. Edw. Palmer. 



Geophis lippiexs. 



Sympiioi.is lippiens Cope, 1861, Pr. Ac. X. Se., Phil, 524. 



Body stout, tail blunt, hardly twice as long as the head, ending in a 

 convex shield. Muzzle prominent, obtuse. Teeth equal, smooth. Eye 

 very small. Rostral large. Prefrontals as broad as long. Frontal long, 

 right-angled at each end. Supraciliary and upper postocular fused, the 

 former as broad as the frontal. Loreal in orbit. One small preocular 

 over the loreal. Xasal united with the labial. Labials five, Inst not so 

 high as long. One temporal. Scales poreless, broader than long, in 1!) 

 rows. Anal entire. Subcaudals bifid. 



Yellow, with eighteen black bands. A band covers the muzzle to behind 

 the eyes; two are on the tail. Total length 20| inches. Guadalaxara, 

 Mexico. (Cope.) 



