424 



PROCEEDINGS OF THE NATIONAL, MUSEUM 



anus; the preoculars are uniformly 1-1, the postoculars 2-2; the tem- 

 porals are 2-1 in one, 1-2 in another, and 2-2 in the remainder. 



The Piedras Negras specimen contained in its stomach two Eleuthe- 

 rodactylus rhodopis, one E. alfredi, two Syrrhopus, and one other 

 unidentifiable amphibian. 



Table 11.— Variation in Drymobius margaritiferus margaritifems 



The Museum has 23 other Mexican specimens, as follows: Cam- 

 peche : Campeche (No. 46454). Chiapas: El Salto (No. 46510). San 

 Luis Potosi (No. 46539). Tabasco (No. 6625). Tamaulipas: Alta- 

 mira (Nos. 46540-1). Veracruz : Catemaco (No. 46480) ; Minatithin 

 (No. 64194 [Old no. 5254] ) ; Mirador (Nos. 24996-7) ; Orizaba (Nos. 

 12119, 65436); San Rafael (No. 32161); Tuxpan (Nos. 25195-9). 

 Yucatan: Chichen Itza (No. 46572); Puerto Morelos (No. 46532). 

 There are three other specimens from "Mexico" (Nos. 12088, 12099, 

 16396). 



DRYMOBIUS MARGARITIFERUS FISTULOSUS Smith 



Drymobius margartiferus fistulosus Smith, Proc. U. S. Nat. Mus., vol. 92, pp. 382- 

 383, 1942. 



Nineteen specimens, all from the vicinity of Tehuantepec, Oaxaca, 

 are referred to this race, although they are so faded by long preserva- 

 tion in formalin that the details of scale pattern are largely obliterated. 

 The precise localities are: Tehuantepec, Nos. 110839-47, 110859-60; 

 Tres Cruces, No. 110848; Cerro Arenal, Nos. 110849-50; Escurana, 

 No. 110851 ; Rincon San Pedro, Nos. 110852-3 : La Conception, Nos. 

 110854-5. 



The scale rows are uniformly 17-15, the preoculars 1-1, and the 

 postoculars 2-2; the temporals are 1-2 in one, 2-1 on one side of one, 

 and 2-2 in the others. 



