CHECKLIST OF THE AMPHIBIA OF MEXICO 47 



Genus ENGYSTOMOPS Jimenez de la Espada 



Engystomops JimiSnez de la Espada, Anal. Soc. Espafia Hist. Nat., vol. 1, 1872 

 p. 86. — Kellogg, U. S. Nat. Mus. Bull. 160, 1932, pp. 77-78.' 



Microphryne Peters, Monatsb, Akad, Wiss. Berlin, 1873, p. 616 (genotype 

 Paludicola pustulosa Cope). 



Genotype. — Engysiomops petersi Jimenez de la Espada. 



Range. — Central Veracruz to Ecuador. 



Species. — Three, of which one occurs m Mexico.*^ 



ENGYSTOMOPS PUSTULOSUS (Cope) 



Paludicola pustulosa Cope. Proc. Acad. Nat. Sci. Philadelphia, vol. 16, 1864, 



p. 180. 

 Engystomops pushdosus Boulenger, Catalogue of the Batrachia Salientia in the 



collection of the British Museum, ed. 2, 1882, p. 275. — Kellogg, U. S. Nat. 



Mus. Bull. 160, 1932, pp. 76-81, fig. 18. 



Type.—V. S. N. M. No. 4339 (now lost). 



Type locality. — New Granada on the River Truando, Colombia. 



Range. — Both sides of the Isthmus of Tehuantepec and on the 

 Atlantic coast from central Veracruz southward into South America. 

 Occurs in Veracruz: Tierra Colorada, near Potrero Viejo, Canada, 

 4 miles east of Encero, near San Gerdnimo, near Jalapa, San Andres 

 Tuxtla; Tabasco: Tenosique; Campeche; Encarnaci6n ; Oaxaca: Santo 

 Domingo, Tehuantepec, Cosolapa; Chiapas: Tonald. 



Genus TOMODACTYLUS Gunther 



Tomodaclylus GtJNTHEB, Biologia Centrali-Americana, Reptilia and Batrachia, 

 1900, p. 219. 



Genotype. — Tomodaclylus amulae Gunther. 



Range. — The southern edge of the main Mexican plateau and the 

 Oaxacan extension. 

 Species. — Five. 



KEY TO MEXICAN SPECIES OF TOMODACTYLUS 



1. Tympanum large, its diameter three-fourths to four-fifths of eye diameter; 



two outer fingers with dilated disks, one and three-fourths to twice nar- 

 rowest width of digit; lumbar gland rather low; maximum size 31 mm. 



macrotympanum (p. 48) 

 Tympanum less than one-half diameter of eye 2 



2. Tips of digits tapering, smaller than width of digit; diameter of tympanum 



one-fourth (or less) of eye diameter; lumbar gland high, distinct; maxi- 

 mum size 27 mm angustidigitorum (p. 48) 



Tips of digits wider than the digits 3 



" This genus is sometimes combined with another, EupemphU Steindachner, 1863 (Sitzb. Akad. Wiss. 

 Wien, math.-natnrw. Kl., vol. 48, p. 188; type, E. nattereri Steindachner, Cuyaba. Brazil), which in its 

 limited sense contains four species. 



