210 CYSTIGNATHIDZ. 
19. Hylodes laticeps. 
Hylodes laticeps, Giinth. Cat. p. 92. 
Hylodes laticeps, A. Dum. Ann. Sc. Nat. (5) xix. p. 178; Dum. § 
Bibr. ix. p. 408, pl. 99; Brocchi, Miss. Se. Mex., Batr. p. 49. 
Tongue subcircular. Vomerine teeth in two small oblique series 
behind the choanze. Head very large, broader than the body; snout 
subacuminate ; tympanum large, higher than broad. First finger 
longer than second; toes webbed at the base; disks rather small. 
Skin smooth above and beneath; a glandular fold from the eye to 
the angle of the mouth, and another along each side of the back ; 
ventral disk very distinct. Dark greenish brown above, yellowish 
white below. 
Yucatan ; Tehuantepec. 
20. Hylodes melanostictus. 
Lithodytes melanostictus, Cope, Journ. Ac. Philad. (n. s.) viii. 1876, 
p. 109, pl. 23. f. 10. 
Hylodes melanostictus, Brocchi, Miss. Se. Mex., Batr. p. 56. 
Tongue subcircular, a little emarginate behind. Vomerine teeth 
in two short transverse series behind the choane. Head flat, wide ; 
snout projecting a little; canthus rostralis distinct; nostril more 
than twice as far from orbit as from tip of snout ; tympanum a rather 
narrow vertical oval, one fourth the size of the eye. First finger 
shorter than second ; disks of fingers large, of toes moderate. The 
hind limb being carried forwards along the body, the tibio-tarsal 
articulation reaches beyond the tip of the snout. Skin everywhere 
smooth. Brownish grey above, dirty white beneath ; limbs cross- 
banded rather distantly with blackish, the bars extending on the 
front and back faces of the femur as well as on the upper surfaces ; 
a white vertebral band, bounded on the sides at different places with 
blackish ; a pink band extends from each tympanum to the end of 
the ilium, and is broadly bordered with black on the outer side, this 
colour extending on the sides of the animal as oblique black spots ; 
a black streak from the tip of the snout through the eye, over the 
tympanum to the angle of the mouth; two black bars from the 
orbit to the lip. 
Pico Blanco, Costa Rica. 
21. Hylodes pelviculus. 
Lithodytes pelviculus, Cope, Proc. Amer. Philos. Soc. xvii. 1877, 
p. 89. 
_Vomerine teeth in short, approximated, transverse fasciculi be- 
hind the choane. Head short, very wide; snout not projecting, 
with distinct canthus rostralis; nostril terminal; lateral borders of 
fronto-parietals elevated into longitudinal crests, which on the vertex 
