46 BULLETIN 194, UNITED STATES NATIONAL MUSEUM 



Puente de Ixtla; Guerrero: El Naranjo, Tonolapam, Mexcala, vicinity 

 of Chilpancingo ; Oaxaca: Tehuantepec, Escurana (15 kilometers west 

 of Tehuantepec) ; Chiapas: TonaU. 



BUFO PUNCTATUS Baird and Girard 



Bufo pundatus Baird and Girard, Proc. Acad. Nat. Sci. Philadelphia, vol. 6, 

 1852, p. 173.— DicKERsoN, The frog book, 1906, pp. 110-112, figs. 116-120, 

 col. pi. 5, fig. 1.— Kellogg, U. S. Nat. Mus. Bull. 160, 1932, pp. 33, 60-63, 

 fig. 13. 



Bufo beldingi Yarrow, U. S. Nat. Mus. Bull. 24, 1883, pp. 23, 163 (La Paz, 

 Baja California; 10 cotypes, U. S. N. M. Nos. 12660, 12670). 



? Bufo coccifer Mocquard (nee Cope), Nouv. Arch. Mus. Hist. Nat. Paris, ser. 

 4, vol. 1, 1899, pp. 334-337 (Santa Rosalia, Baja Cahfornia). 



TV^g.— Cotypes, U.S.N.M. No. 2618, 3 specimens, lost. 



Type locality. — Rio San Pedro [Devils River], Val Verde County, 

 Tex. 



Range. — Utah and Kansas southward to Guanajuato, Baja Cali- 

 fornia, and Tamaulipas. Recorded in Mexico from the states of 

 Tamaulipas, Coahuila, Nuevo Leon, Chihuahua, San Luis Potosi, 

 Sinaloa, Sonora, Guanajuato, and Baja California. 



Family LEPTODACTYLIDAE Berg 



Leptodactylidae Berg, Anal. Mus. Nac. Buenos Aires, vol, 5, 1896, p. 161. 



KEY TO MEXICAN GENERA OF LEPTODACTYLIDAE 



1. Small toadlike animal, lacking maxillary and vomerine teeth. 



Engystomops (p. 47) 

 Froglike or toadlike form, maxillary teeth present; vomerine teeth present 

 or absent 2 



2. Small to very small frogs; vomerine teeth absent normally (present occa- 



sionally in Syrrhophus latodadylus and Microbatrachyhis linealissimus) — 3 

 Larger forms, vomerine and maxillary teeth present 5 



3. A ventral disk confined to the abdomen, not reaching femora; vocal sac 



present in males; testes and ovaries unpigmented 4 



Ventral disk terminating posteriorly on the femora; testes and ovaries 

 heavily pigmented; no vocal sac in males; very small species, 13-27 mm. 



Microbatrachylus (p. 53) 



4. An elongate, elevated, definitive, lumbar or lumboinguinal gland. 



Tomodactylus (p. 47) 

 No elongate, elevated gland; gland when present diffuse, subcircular, 

 often not easily visible externally Syrrhophus (p. 49) 



5. Mesosternum forming a bony style; vomerine teeth in elongate transverse 



series Leptodactylus (p. 55) 



Mesosternum cartilaginous with a double, arrow-shaped, posterior termi- 

 nation; ventral abdominal disks present, not reaching femora; testes 

 and ovaries unpigmented (Eleutherodadylus calcitrans exception); 

 inguinal gland if present indistinct Eleutherodactylus (p. 57) 



