MEXICAN SNAKES AND CROCODILIANS — SMITH 475 



(1.5X2 mm.), narrowest in the Tehuacan specimen (1.7X2.6 mm.) ; 

 the sides of the frontal are convergent posteriorly in the latter speci- 

 men, parallel in the other two. A loreal is present on one side in 

 one (No. 25032, Mirador, split off the preocular) and on both sides 

 of another (No. 110396, split off the prefrontals). 



The Museum has two other specimens (Nos. 25032-3), from Mira- 

 dor, Veracruz. 



Ventrals and caudals, respectively, in No. 110395, 164, 57 ( S ) ; No. 

 110396, 181, 49 ( ? ) ; No. 110397, 180, 57 ( S ) ; No. 25032, 179, 61 ( S ) ; 

 No. 25033, 179, 65 ( $ ) . 



TANTILLA JANI (Giinther) 



Two specimens (Nos. 110377-8) were secured at La Esperanza, 

 Chiapas. One was found during the dry season (April 12) in a 

 rotten log. The other was routed from its hiding quarters under 

 leaves during the day in the wet season (June 3). Both are females, 

 with 154 and 150 ventrals, 45 and 44 caudals, respectively. The dor- 

 sal stripe is confined to the vertebral scale row; all scales in that 

 row are dark-edged posteriorly. 



The Museum has no others of the species. 



♦TANTILLA MINIATA Cope 



A single specimen (No. 25031) in the Museum is from Mirador, 

 Veracruz. 86 



♦TANTILLA MOESTA (Gunther) 



Two specimens in the Museum are from Yucatan (Nos. 6565, 

 24883). 



TANTILLA NIGRICEPS NIGRICEPS Kennicott 



Tawtilla nigriccps nigriceps Smith, Zoologica, vol. 27, p. 38, 1942. 



One specimen (No. 104674) is from Kio Santa Maria, Chihuahua 

 (near Progreso). Ventrals 158 (female), tail injured. Black cap 

 of head pointed posteriorly, the apex extending four scales posterior 

 to parietals. 



The Museum has no others from Mexico; in fact, this is the only 

 specimen known as yet from Mexico. 



♦TANTILLA NIGRICEPS FUMICEPS (Cope) 



Two Mexican specimens in the Museum are from Mier, Tamaulipas 

 (Nos. 46584-5). 8T 



ea Cope, 1S63, p. 100. 

 87 Smith, 193S, p. 150. 



