MEXICAN SNAKES AND CROCODILIANS — SMITH 421 



Remarks. — Hartweg and Oliver (1940, p. 21) give the counts of 

 seven specimens with complete tails, and 13 of the series in the Na- 

 tional Museum also have complete tails. In these 20 specimens the 

 range of variation is from 103 to 112. Tail counts on 10 stuarti from 

 Chiapas, Guerrero, and Colima show a variation of from 113 to 118. 

 The caudals of Tres Marias Islands specimens (slevini) may be as 

 few as 105, but these are differentiated by another character (anterior 

 ventral pattern). 



DRYADOPHIS MELANOLOMUS VERAECRUCIS Stuart 



Four specimens were secured, at Potrero Viejo (Nos. 110895-6) and 

 Cuautlapan (Nos. 110897-8), Veracruz. All are males, with the fol- 

 lowing scale counts (in the order given above) : Ventrals 176, 179, 171, 

 177; caudals 104+, 112, 115, 110; supralabials 9-9, 9-9, 8-9, 9-9; in- 

 fralabials 11-11, 10-11, 10-11, 10-11 ; preoculars 1-1 ; postoculars 2-2 ; 

 temporals 2-2. The two Cuautlapan specimens (both young) differ 

 from all other young and subadults by completely lacking light cross- 

 bars. In their stead are two dorsolateral light lines, one on each side, 

 running between the fifth and sixth scale rows ; these lines are visible 

 only anteriorly. They are faintly indicated in one of the Potrero 

 specimens, which also has light cross bands anteriorly. 



The Museum has eight other specimens, from Tabasco (Teapa, No. 

 46592) and Veracruz (Catemaco, Nos. 46478-9; Jalapa, No. 5346; 

 Mirador, No. 25007; Orizaba (?), No. 30357; San Rafael, Jicaltepec, 

 No. 32162; Tuxpan, No. 25194). 



♦DRYMARCHON CORAIS CLEOFAE Brock 



The Museum has a single specimen (No. 24683) 30 from Maria Ma- 

 dre Island, Tres Marias Islands. 



DRYMARCHON CORAIS EREBENNUS (Cope) 



Dtymarchon corals erebennus Smith, Journ. Washington Acad. Sci., vol. 31, 

 pp. 478-479, 1941. 



Six specimens were collected, at three localities : Hacienda La Clem- 

 entina, near Forlon, Tamaulipas (Nos. 105307-8, 110866-7) ; 5 km. 

 south of Chapulhuacan, Hidalgo (No. 110868) ; and Huichihuayan, 

 San Luis Potosi (No. 110869). 



The Museum has three others from Mexico: No. 1859 from Mata- 

 moros, Tamaulipas; No. 25200 from Tuxpan, Veracruz; and No. 

 37515 from Sabinas, Coahuila. 



*o Smith, 1941r, p. 475. 



