MEXICAN SNAKES AND CROCODILIANS — SMITH 423 



tentatively referred previously to this race, is Drymarchon corais 

 cleofae Brock. 



DRYMARCHON CORAIS UNICOLOR Smith 



Drymarchon corais unicolor Smith, Journ. Washington Acad. Sci., vol. 31, pp. 

 470-472, 1941. 



Two specimens were collected, one near La Esperanza (near Escu- 

 intla) , Chiapas (No. 110865) , and one at Colonia Hidalgo, 8 km. north 

 of La Esperanza (HMS No. 1455G). 



The Museum has three other Mexican specimens, from "Tehuante- 

 pec" (No. 30424) ; Huehuetan, Chiapas (No. 46464) ; and "Mexico" 

 (No. 39051). 



DRYMOBIUS CHLOROTICUS (Cope) 



Two specimens were taken, one on Cerro Ovando, 5,000 feet, Chia- 

 pas (No. 110824), the other from Finca Juarez, 3,000 feet, Chiapas 

 (No. 110825). These are, respectively, male and female; ventrals 158, 

 168; caudals 91+, 125; supralabials 9-9; infralabials 10-11, 10-10; 

 preoculars 1-1 ; postoculars 2-2 ; temporals 2-2. 



The Ovando specimen was found under a small piece of wood, pre- 

 paring to shed (eyes translucent, nearly opaque). The Juarez spec- 

 imen was found on the ground beneath bushes. 



The hemipenes of the Ovando specimen agree perfectly with the 

 generic characters of Drymobius as redefined by Stuart (1932, pp. 

 1-16, pis. 1-5), as does also the number of maxillary teeth (31) of 

 the same specimen. However, this number is considerably greater 

 than that given by Boulenger (1894, p. 16), who says the teeth 

 number no more than 25. The ventral and caudal counts, however, 

 agree with those of chloroticus (Stuart, 1933, p. 10). 



The Museum has one other Mexican specimen, from Tuxtla Volcano, 

 San Andres, Veracruz (No. 46404). 



DRYMOBIUS MARGARITIFERUS MARGARITIFERUS (Schlegel) 



Drymohius maryaritiferus margaritiferus Smith, Proc. U. S. Nat. Mus., vol. 

 92, p. 393, 1942. 



Thirteen specimens were collected, as follows: Veracruz: Cuautla- 

 pan (Nos. 110828-33) ; Potrero Viejo (Nos. 110826-7) ; Orizaba (No. 

 110834). Tabasco: Tenosique (No. 110835). Chiapas: San Juanito, 

 near Palenque (No. 110835); Tonala (No. 110836). Guatemala: 

 Piedras Negras, Peten (No. 110838). 



The fact that the southernmost specimens, from Tonala, Piedras 

 Negras, and Tenosique, have the lowest ventral counts probably has 

 some significance ; the present series is not sufficiently large to warrant 

 segregation of two races, however. The scale rows are regularly 17-15, 

 with the exception of one (No. 110829) with 13 scale rows near the 



