210 CYSTIGNATHID^. 



19. Hylodes laticeps. 



Hylodes laticeps, Gunth. Cat. p. 92. 

 Hylodes laticeps, A. Dum. Ann. Sc. Nat. (3) xix. p. 178 ; Dum. 8f 

 Bihr. ix. p. 408, pi. 99; Brocchi, 3fiss. Sc. Mex., Batr. p. 49. 



Tongue subcircular. Vomerine teeth in two small oblique series 

 behind the choanae. 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 

 vrhite below. 



Yucatan ; Tehuantepec. 



20. Hylodes melanostictus. 



Lithodytes melanostictus, Cope, Journ. Ac. Philad. (n. s.) viii. 1876, 



p. 109, pi. 23. f. 10. 

 Hylodes melanostictus, Brocchi, 3Iiss. Sc. Mex., Batr. p. 60. 



Tongue subcircular, a little emarginate behind. Vomerine teeth 

 in two short transverse series behind the choanae. 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 choanae. 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 



