17. BORBOROC@TES. 253 
1. Borborocetes nodosus. 
Cystignathus nodosus, Dum. § Bibr. p. 415; Guichen. in Gay, Chile, 
Rept. p. 98. 
Kusophus nodosus, Cope, Nat. Hist. Rev. 1865, p. 113. 
Tongue circular, slightly nicked behind. Vomerine teeth in two 
small groups between the choanx. Snout short, rounded ; tympanum 
indistinct. Fingers and toes moderate ; subarticular tubercles very 
strong ; two small metatarsal tubercles. The hind limb being carried 
forwards along the body, the foot extends beyond the snout. Scat- 
tered small warts on the back; a rather indistinct parotoid gland 
above the tympanum to the shoulder. Brown above, dotted with 
black ; limbs cross-barred; hinder side of thighs speckled with white ; 
light brown beneath, 
Chili. 
2. Borborocetes roseus. 
Cystignathus nodosus, Giinth, Cat. p. 29. 
Cystignathus roseus, Giinth. 1. ¢. p. 134, 
Cystignathus roseus, Dum. § Bibr. p. 414; Guichen. in Gay, Chile, 
Rept. p. 99, pl. 7. £3; Hspada, Viaj. Pacif., Vertebr. p. 73. 
Borboroceetes roseus, Cope, Nat. Hist. Rev. 1865, p. 113. 
? Cystignathus sylvestris, Tschudi, Faun. Per, p. 66, pl. 11. £1; 
Peters, Mon. Berl. Ac, 1873, p. 625, 
Tongue subcircular, entire. Vomerine teeth in two oblique series 
commencing on a level with the hinder edge of the choanz. Snout 
rounded, slightly longer than the greatest orbital diameter; nostril 
equally distant from the eye and the tip of the snout ; interorbital 
space as broad as the upper eyelid; tympanum slightly distinct. 
Fingers moderate, first not extending beyond second ; toes moderate, 
with a slight rudiment of web; subarticular tubercles not much 
developed ; a small inner, and an indistinct outer metatarsal tubercle. 
The hind limb being carried forwards along the body, the tibio- 
tarsal articulation reaches the eye. Skin smooth, the upper surfaces 
distinctly porous. Brownish above, indistinctly marbled with darker ; 
a light dorsal stripe. 
Chili. 
GG: Chili. C. Darwin, Esq. [P.]. 
br Ye: S. America. C. Darwin, Esq. [ P. |] 
3. Borborocetes hidalgi. 
Cystignathus hidalgoi, Lspada, Viaj. Pacif., Vertebr, p. 76. 
Tongue circular, nicked behind. Vomerine teeth in two nearly 
straight series between the choane. Snout rounded ; tympanum 
distinct, vertically elliptic, half the diameter of the eye. First finger 
as long as second; toes fringed, with a rudimentary web; subarti- 
cular tubercles moderate. The hind limb being carried forwards 
