REPTILES AND BATRACHIANS FROM TEXAS 

 AND MEXICO. 



DY SAMUEL GAUMAN. 



The collection from which this notice is taken was made 

 several years ago by Dr. Edward Palmer for the Museum 

 of Comparative Zoology. It contained twenty snakes, 

 nineteen lizards, three turtles, thirteen frogs and toads 

 and one salamander; in all, fifty-six species, represented 

 by several hundred specimens. Especial interest attaches 

 to it, because of the pains taken by the doctor to secure 

 series of young and old, and the care with which he fixed 

 the localities and the dates of capture. The scarcity of 

 new species or varieties is accounted for b} r the fact that 

 the same regions had been visited by the collectors of the 

 Mexican Boundary Survey. Yet, although the ground 

 had been so well traversed before this collection was made, 

 it contains a number of forms not previously included in 

 recent faunal lists of their respective localities. 



Crotalus atrox Baird & Girard, 1853. 



On a specimen from San Pedro, Mex., there are twen- 

 ty-five rows of dorsals, one hundred and eighty-one von- 

 trals, twenty-six subcaudals, thirty-seven transverse blotch- 

 es on the back, and six bands of black around the tail. 

 Another from Monclova, Mex., has twenty-five rows of 

 dorsals, one hundred and Beventy-eight ventrals, twenty- 

 five subcaudals, thirty-two blotches on the back and five 

 bands of black on the tail. The following notes on the 



ESSKX INST. BULLETIN, VOL. XIX. 10 (119) 



