256 CrSTI&NATHID^. 



extremities, and vomerine teeth in two oblique groups behind the 

 choansB. 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. Borborocoetes maculatus. 



P Cystignathus nebulosus, Girard, U.S. Expl. Exped., Hevp. p, 33, 



pi. 3. f . 19-23. 

 Cacotus maculatus, Guftth. Proc. Zool. Soc. 1868, p. 482, pi. 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 choanse. 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, $? ChiU. (Types.) 



10. Borboroccetes calcaratus. (Plate XVII. fig. 1.) 

 Cacotus calcaratus, Giinth. Proc. Zool. Soc. 1881, p. 19. 



Tongue slightly nicked behind. Vomerine teeth in two oblique 

 groups behind the choance. 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 V-shaped glandular ridge on 

 the back. Pinkish brown above, indistinctly marked with darker j 

 a brown streak below the canthus rostralis; another, broader, from 

 the eye to the middle of the side ; limbs cross-barred. 



Chiloe. 



a. Hgr. Chiloe. (Type.) 



