14 BULLETIN 194, UNITED STATES NATIONAL MUSEUM 



AMBYSTOMA FLUVINATUM Taylor 



Ambystoma flutinatum Tatlor, Copeia, Sept. 30, 1941, pp. 144-146, figs. 2A, 2B. 



Type.— EHT-HMS No. 25383. 



Tyjpe locality. — Mojarachic, Chihuahua, Mexico. 



Range. — KjQown only from the type locality. 



AMBYSTOMA TIGRINUM PROSERPINE Baird and Girard 



Ambystoma proserpine Baird and Girard, Proc. Acad. Nat. Sci. Philadelphia, 

 vol. 6, 1852, p. 173. 



Amblystoma proserpina Baird, Report on the United States and Mexican Bound- 

 ary Survey, vol. 2, Reptiles, 1859, p. 29, pi. 35, figs. 7-14. 



Type.— U.S.N.M. No. 4082 (6 cotypes). 



Type locality.— Salsido [River], 4 miles east of San Antonio, Texas; 

 and enroute "from Montgomery, Mexico." 



Range.— Souiherji Texas and adjoining northern Mexico. Re- 

 corded from Mexico only, possibly, "on the route from Montgomery, 

 Mexico." ^^ 



Suborder Salamandroidea Noble 



Salamandroidea Noble, The biology of the Amphibia, 1931, p. 473. 



Family SALAMANDRIDAE Gray 



Salamandridae Gray, Ann. Philos., new ser., vol. 10, 1825, p. 215. 



KEY TO MEXICAN GENERA OF SALAMANDRIDAE " 



1. Head flat, lacking dorsal keels; body unspotted, with numerous well- 

 defined tubercles; fingers and toes relatively short Taricha (p. 14) 



Head with two dorsal crests; middle fingers elongate — Diemictylus (p. 16) 



Genus TARICHA Gray 



Taricha Gray, Catalogue of the Batrachia Gradientia of the British Museum, 

 1850, p. 25. 



Genotype. — Triton torosus Eschscholtz. 



Range. — Pacific North America, British Columbia, and possibly 

 southeastern Alaska to northwestern Baja California. 



Species. — Seven forms are recognized, of which three are considered 

 as subspecies of T. granulosus; only one enters Mexico. 



'• At least some of the several records of Ambystoma tigrinum from northern and northwestern Mexico 

 probably are referable to this race. Since, however, we have been unable to determine with desirable 

 accuracy the range of this or any other race of Ambystoma tigrinum reported or expected from northern 

 Mexico we do not allocate the uncertain locality records. 



»« We follow the work of various European taxonomists, including Wolterstorff and Herre, in segregating 

 American genera of this family. Evidence supporting such an arrangement has been gathered by the 

 exhaustive researches of Barbara Leonard at the University of Rochester and is in preparation for pub- 

 lication. 



