256 OYSTIGNATHID A. 
extremities, and vomerine teeth in two oblique groups behind the 
choane. Tympanum distinct, very small. Skin slightly warty. 
Dark olive-brown above, marbled with darker ; sometimes a light 
vertebral line ; beneath light violet, marbled with black. 
Maraynioc, Peru. 
9. Borborocetes maculatus. 
? Cystignathus nebulosus, Girard, US. Expl. Exped., Herp, p. 33, 
pl. 3. £. 19-25. 
Cacotus maculatus, Giinth. Proc. Zool. Soc. 1868, p. 482, pl. 38. f. 5. 
? Eusophus nebulosus, Cope, Proc. Amer. Philos, Soc. xi. 1869, p. 168. 
Tongue slightly nicked behind. Vomerine teeth in two small 
transverse series between the choane. Snout rounded, as long as 
the greatest orbital diameter ; nostril equally distant from the eye 
and the tip of the snout; interorbital space as broad as the upper 
eyelid; no tympanic disk. First finger not extending beyond 
second ; toes quite free, slightly fringed ; subarticular tubercles much 
developed; two metatarsal tubercles. The hind limb being carried 
forwards along the body, the tibio-tarsal articulation reaches the 
hinder edge of the eye. Upper surfaces with very small smooth 
tubercles. Greenish olive above, marbled with brownish; a dark 
band across the forehead from one eye to the other ; a black band 
along the canthus rostralis and from the eye to the arm-pit; limbs 
with black cross bands. ‘Throat and abdomen whitish, marbled 
with blackish. 
Chili. 
a-b, QP Chil. (Types. ) 
10, Borborocetes calcaratus. (Prary XVII. fig. 1.) 
Cacotus calcaratus, Giinth. Proc. Zool. Soc, 1881, p. 19. 
Tongue slightly nicked behind. Vomerine teeth in two oblique 
groups behind the choanee. Snout rounded, as long as the greatest 
orbital diameter ; nostril equally distant from the eye and the tip of 
the snout ; interorbital space as broad as the upper eyelid; no tym- 
panic disk. First finger not extending as far as second ; toes free, 
slightly fringed ; subarticular tubercles well developed ; two small 
but very prominent metatarsal tubercles ; a conical tubercle on the 
tibio-tarsal articulation, The hind limb being carried forwards 
along the body, the tibio-tarsal articulation reaches the eye. Upper 
surfaces with very minute tubercles ; a Y-shaped glandular ridge on 
the back. Pinkish brown above, indistinctly marked with darker ; 
a brown streak below the canthus rostralis ; another, broader, from 
the eye to the middle of the side ; limbs cross-barred. 
Chiloe. 
a. Der. Chiloe. (Type.) 
