226 CYSTIGNATHID 2, 
greenish above, with large insuliform, light-edged olive spots ; some- 
times yvinaceous red lines between the spots. Male with asubgular 
vocal sac. 
EK. 8. America. 
a-b. dQ. Buenos Ayres. Ch. Darwin, Esq. [P.]. (Types.) 
ce. Q. Buenos Ayres. KE. W. White, Esq. [P.]. 
tes Parana. 
8. Ceratophrys americana. 
Pyxicephalus americanus, part., Giinth. Cat. p. 24. 
Pyxicephalus americanus, Dum. § Bibr. p. 446; Bell, Zool. Beagle, 
Rept. p. 40, pl. 18. £. 2; D’Orbigny, Amér. mérid, y. p. 10, pl. 14. 
f. 1-4; Espada, Via. Pacif., Vertebr. p. 20. 
Vomerine teeth in two straight groups a little behind the choane. 
Head moderate, not bony ; nostril equally distant from the eye and 
the tip of the snout ; eyelid normal ; interorbital space flat, narrower 
than the upper eyelid; tympanum hidden. First finger longer than 
second ; toes one-third webbed; subarticular tubercles well deve- 
loped ; inner metatarsal tubercle very large, shovel-shaped, black- 
edged ; a short tarsal fold. The hind limb being carried forwards 
along the body, the metatarsal tubercle does not reach the eye. Skin 
tuberclar above and beneath ; a few elongated glands on the back. 
Olive above, with large, insuliform, light-edged spots; a light ver-. 
tebral stripe. 
KE. 8. America. 
ai 
Ga S.. Montevideo. 
b. Ye. Montevideo, Charles Darwin, Esq. [P.]. 
(oi ae Buenos Ayres. EK. W. White, Esq. [C.]. 
9. Ceratophrys cultripes. 
Pyxicephalus americanus, part., Giinth. Cat. p. 24. 
Odontophrynus cultripes, Remh. § Liitk. Vidensk. Meddel. 1861, 
p59, pl ast. 1: 
Pyxicephalus cultripes, Cope, Proc. Ac. Philad. 1863, p. 51. 
Vomerine teeth in two slightly oblique series between the 
choane. Head moderate, not bony; nostril a little nearer the 
eye than the tip of the snout; upper eyelid simple; interorbital 
space scarcely concave, a little narrower than the upper eyelid; 
tympanum hidden. First finger longer than second ; toes one-third 
webbed ; subarticular tubercles well developed; inner metatarsal 
tubercle very large, shovel-shaped, brown-edged; a very distinct 
tarsal fold. The hind limb being carried forwards along the body, 
the metatarsal tubercle does not reach the eye. Skin tubercular 
above and beneath ; two or three parotoid-like glands on each side of 
the neck and front part of the back; a large parotoid-like gland on 
