HYLODES. 235 
14. Hylodes augusti. (lab. LXVIII. fig. D.) 
Hylodes augusti, Brocchi, Miss. Sc. Mex., Batr. p. 52, t. 16. figg. 1, 1 a—c. 
Hab. Mexico, Guanajuato and Tupataro (Dugés), Ventanas in Durango, from a mine 
1000 feet deep (Forrer). 
Habit stout, the length of the body being rather more than the distance between 
vent and heel; snout short, broad, depressed, with the canthus rather obtuse and the 
loreal region shelving outwards. Tympanum one-half or one-third the size of the eye 
(in females). Vomerine teeth in two very short oblique groups, close together, and on 
a level with the hind margin of the choane. Back with small scattered tubercles, 
abdomen smooth. Disks of the fingers and toes exceedingly small. First finger con- 
spicuously longer than second; two metatarsal tubercles; no tarsal fold; subarticular 
tubercles continued on the metatarsals. Brownish-olive, all the upper parts marbled 
with dark brown, one or the other of the brown markings assuming the form of 
cross-bands on the back, and edged with white. Lower parts white. 
Length of body . . . . . . . . ) . «86 millim. 33 millim. 
Distance between vent and heel. . . . 32 = ,, 29 ~—C*, 
I have long hesitated before identifying our specimens with the species named by 
Dugés and Brocchi, as the latter figures the vomerine teeth widely distant from 
each other. However, there is a great agreement between these frogs in all other 
respects. Unfortunately, the type (as Messrs. Vaillant and Mocquard have kindly 
informed me) is not preserved in the Paris Museum. 
15. Hylodes laticeps. 
Hylodes laticeps, A. Dum. Ann. Sc. Nat. 3rd ser. Zool. xix. p. 178; Dum. et Bibr. Erpét. Gén. ix. 
p. 408, t. 99; Brocchi, Miss. Sc. Mex., Batr. p. 49. 
Epirhexis laticeps, Cope, Bull. U. S. Nat. Mus. no. 32, p. 17 (name only). 
Hab. Mexico, Yucatan (More/et), Tehuantepec (Brocchi). 
Head very large, broader than the body ; snout broad. Tympanum higher than long ; 
vomerine teeth in two short oblique series behind the choane. Skin smooth above 
and below; a glandular fold above and round the tympanum ; another along the side 
of the back; abdominal disk very distinct. Disks of fingers and toes small; first 
finger longer than the second. Toes free*. Upper parts greenish-brown, loreal 
region and tympanum black; whitish below, finely marbled with brown on the throat 
and limbs. 
* Boulenger (Batr. Sal. p. 210) introduces into the diagnosis of this species the words ‘“ toes webbed at 
the base,” while A. Duméril describes them as completely free ; also the figure quoted represents them without 
a rudiment of a web. 
