MEXICAN AMPHIBIANS—TAYLOR AND SMITH 585 
between 19 and 22.5 mm., the average for both sexes being 21, for the 
males alone 20.6 mm. 
The amount of the hight spotting differs in different specimens. In 
some the spots may be smaller and more numerous, in others larger 
as if some of them had become confluent. The lines on the snout 
vary in distinctness but, if specimens are placed under clear water, 
the pattern can usually be discerned. There is but very slight differ- 
ence in the size of the tympanum in the two sexes. 
Syrrhophus leprus, which occurs in the northeastern part of Chiapas, 
can be distinguished by the more reticulated, cream-colored pattern 
on a purplish background, the larger size, and the presence of the outer 
palmar tubercle. This form probably averages (for females) 30 mm. 
in length. From the recently described Syrrhophus nebulosus which 
occurs in the same locality (generally), it may be distinguished by its 
smaller size, darker venter, narrower interorbital width and the dif- 
ferent color pattern. The latter species, however, lacks the outer 
palmar tubercle also. 
These specimens were found at night hopping on the ground in 
coffee groves or in uncleared forest. Others were encountered during 
the day in or about rotting logs. 
Genus TOMODACTYLUS Giinther, 1900 
TOMODACTYLUS NITIDUS (Peters) 
Iiuperus [sic] nitidus Peters, Monatsb. Akad. Wiss. Berlin, 1869, p. 878 (state 
of Puebla). 
Tomodactylus mitidus KeLuoae, U. 8. Nat. Mus. Bull. 160, 1932, pp. 120-128, 
Six specimens were secured, one from the mountainside west of 
Acultzingo, Veracruz, April 30, 1989 (U.S.N.M. No. 114099), and 
five (U.S.N.M. Nos. 114094-114098) from a locality 8 km. west of 
Cuernavaca, Morelos, August 6, 1939. They were found under stones. 
TOMODACTYLUS ANGUSTIDIGITORUM Taylor 
Tomodactylus angustidigitorum 'Taytor, Univ. Kansas Sci. Bull., vol. 26, 1940g, 
pp. 494-496, pl. 55, fig. 1 (Quiroga, Michoacan). 
A small specimen (U.S.N.M. No. 114100) is from a locality 6 km. 
east of Carapa, Michoacdin, August 12, 1939. It was found under a 
rotten log. 
TOMODACTYLUS AMULAE Giinther 
Tomodactylus amulae GUNTHER, Biologia Centrali-Americana, Rept. Batr., Apr, 
1900, p. 219, pl. 64, fig. ec (Amula, state of Guerrero). 
A single specimen (U.S.N.M. No. 114101), obtained by Taylor 
under the bark of a rotting log at Omilteme, Guerrero, August 2-4, 
1940, is referred to this species. 
594124—45—_5 
