482 PROCEEDINGS OF THE: NATIONAL MUSEUM vol. loi 



Genus NINIA Baird and Girard 



NINIA SEBAE SEBAE (Dumeril, Bibron, and Dumeril) 



Strcptophorus sahae Dtjm^ril, Bibron, and Dumeril, Erpetologie geu^rale, vol. 7, 



pt. 1, 515, 1854. 

 Ninia setae sebae Schmidt and Andrews, Publ. Field Mus. Nat. Hist., zool. ser., 



vol. 20, p. 170, 1936. 



U.S.N.M. Nos. 123711 male, and 123710 female, from San Lucas 

 Camotlan, Oaxaca. The female was taken at 8 : 00 p. m. on a big rock 

 extending into the river in the center of town. The male was caught 

 20 minutes later within a few feet of where the female was taken. 



There are 19 scale rows in both specimens. Male ventrals 151, 

 caudals 50; female ventrals 147, caudals 52. The male ventrals are 

 high in number for the subspecies, as they are usually less than 140. 



Ground color of the living specimens was red with contrasting black 



bands. 



Genus TANTILLA Baird and Girard 



TANTILLA PHRENITICA Smith 



TautiUa phrenitica Smith, Zoologica, vol. 27, p. 39, 1942. 



U.S.N.M. No. 123707 female, from Oaxaca, taken on trail just west 

 of Camotlan at 5 : 30 p. m. "The day had been hot, but it now clouded 

 over and began to thunder, threatening rain." 



Total length 280 mm. ; tail 46 mm. ; scales in 15 rows ; ventrals 146 ; 

 caudals 36 ; mental contacts chin shields. 



The specimen was black above, salmon colored below. A flesh- 

 colored band crosses the back of the head involving the tips of the 

 parietals. 



Genus THAMNOPHIS Fitzinger 



THAMNOPHIS CHRYSOCEPHALUS (Cope) 



Eutaenia ehrijsocephahis Cope, Proc. Amer. Philos. Soc, vol. 22 1884, pp. 173, 



174, 1885. 

 ThamnopJiis chrysocephalus Smith, Zoologica, vol. 27, p. 104, 1942. 



U.S.N.M. No. 123708 male, from San Lucas Camotlan, Oaxaca, taken 

 April 16, 1946, in right-hand fork of the river located in the west end 

 of the town. 



Miller writes of this specimen: "Over-all color dark brown with 

 black spots. Dorsal line light greenish brown near head, becoming 

 darker farther back of the anus. Belly a bluish gray. On sides a 

 very light tan stripe runs from base of jaws to just back of anus where 

 it almost disappears, blending into belly." Mr. Miller's description 

 is accompanied by a sketch, demonstrating the distinct nature of the 



