MEXICAN SNAKES AND CRiOCODILIiANS SMITH 461 



lineaticoUis deppei deppei 



1. Ventrals 236 to 249 1. Ventrals 211 to 235 



2. Dorsal scales between the blotches 2. Dorsal scales between the blotches 



unmarked (and many of those involved by 



blotches) with a dark, median, 

 longitudinal streak 



3. Neck stripes 3. No neck stripes 



4. Blotches conspicuously light-centered. 4. Blotches solid black anteriorly and 



anteriorly as well as posteriorly, posteriorly, light-centered medially, 



dark borders well defined and dark borders incomplete when 



broad present (medially) 



The Acultzingo specimen has 231 ventrals, as in d. deppei, and the 

 dorsal scales have longitudinal dark streaks, giving much the general 

 appearance of d. deppei. In these two characters it is unquestionably 

 referable to the latter race. In the more important characters of the 

 neck stripes and light-centered dark-edged blotches, however, it is 

 unquestionably referable to lineaticoUis. In view of the fact that 

 the specimen probably comes from an area between the known 

 peripheral range of lineaticoUis, and the known central plateau range 

 of d. deppei, intergradation between these two is very strongly indi- 

 cated. It is possible that a race distinct from either lineaticoUis or 

 deppei deppei is represented, but if so, it still would occupy a position 

 linking deppei and lineaticoUis. The latter possibility is not very 

 great, since typical deppei is known from the Tehuacan desert basin 

 (Cacaloapam, Puebla ; see Taylor, 1940, p. 463) as well as from Jalapa, 

 Veracruz (type locality). 



The Museum has four other specimens, 69 from Guerrero (Acahui- 

 zotla, No. 46537; Omilteme, No. 46462) and unknown localities (Nos. 

 30506, 32220) . 



*PLIOCERCUS BICOLOR Smith 



A single specimen, the type, is in the Museum, from Tuxpan, 

 Veracruz (No. 25203 ). 70 



PLIOCERCUS ELAPOIDES ELAPOIDES Cope 



Pliocercus elapoides elapoides Smith, Proc. Biol. Soc. Washington, vol. 54, pp. 

 119-120, 1941. 



Four specimens were collected, at Potrero Viejo, Veracruz (No. 

 110063), and Cuautlapan, Veracruz (Nos. 110764-6). The Museum 

 has six others, from Orizaba (Nos. 4383, 6323, 12125) and Mirador 

 (Nos. 6368, 25029-30), Veracruz; and in addition an intergrade be- 

 tween this and diastemus, from an unknown locality, possibly Santa 

 Efigenia, Oaxaca (No. 62088). 



68 Stall, 1940, p. 51. 

 "Smith, 194Jp, pp 123-124. 



