240 CYSTIGNATHID A. 
than second; toes moderate, not fringed ; subarticular tubercles 
well developed; two small metatarsal tubercles, The hind limb 
being carried forwards along the body, the tibio-tarsal articulation 
reaches in front of the tympanum. Skin smooth; no ventral dis- 
coidal fold. Brown above; a broad rose-coloured band occupies the 
whole back from the nostril to the sacrum; limbs with blackish 
cross bars; lower parts greyish, white-spotted. 
Peru. 
a. Hgr. ?, Chyavetas, E. Peru. Mr. E. Bartlett [C.]. (Type.) 
3. Leptodactylus hyledactylus. 
Cystignathus hyledactylus, Cope, Proc. Ac. Philad. 1868, p. 115. 
Tongue oval, slightly nicked behind. Vomerine teeth in two 
slightly arched series behind the choane. Snout ovate; nostril 
nearer the tip of the snout than the eye; interorbital space broader 
than the upper eyelid; tympanum two thirds the width of the eye. 
Fingers moderate, first not extending beyond second ; toes moderate, 
not fringed, with distinctly dilated tips; subarticular tubercles 
strong; two minute metatarsal tubercles. The hind limb being 
carried forwards along the body, the tibio-tarsal articulation reaches 
the eye. Skin of upper surfaces granular; a vertebral and dorso- 
lateral dermal fold, the latter frequently interrupted; a row of 
elongate warts on each side; a ventral discoidal fold. Brown above, 
indistinctly marbled with darker ; a dark band between the eyes; 
hind limbs cross-barred ; hinder side of thighs dark brown, marbled 
with white. 
E. 8. America. 
a-b. Q. Demerara Falls. 
4, Leptodactylus longirostris. (Puare XVI. fig. 3.) 
Tongue oval, nicked behind. Vomerine teeth in two slightly 
arched series behind the choane. Snout acuminate, much longer 
than the greatest orbital diameter; nostril a little nearer the tip of 
the snout than the eye; interorbital space narrower than the upper 
eyelid; tympanum two thirds the width of the eye. Fingers 
moderate, first much longer than second; toes slender, not fringed ; 
subarticular tubercles much developed; a small inner, and a very, 
small, rather indistinct, outer metatarsal tubercle. The hind limb 
being carried forwards along the body, the tibio-tarsal articulation 
reaches the tip of the snout. Skin with a few flat warts above; a 
glandular lateral fold; a ventral discoidal fold. Brown above, with 
rather indistinct darker spots; a dark angular spot between the 
eyes; a blackish-brown streak along the upper lip, the canthus 
‘rostralis, and round the tympanum ; legs cross-barred; hinder side 
of thighs with a dark brown network; beneath immaculate. 
Brazil. 
a-b. 9. Santarem. Mr. Wickham [C.]. 
