929 CYSTIGNATHIDA. 
II. Upper eyelid produced into a horn-like appendage. 
A. No dorsal shield. 
Sides of head and body with triangular 
skinny appendages; metatarsal tu- 
bercle reaching beyond the eye .... 2. appendiculata, p. 222. 
Metatarsal tubercle not reaching beyond 
the eye ; interorbital space concave ; a 
very distinct ridge between the eyes. 3. bovet, p. 223. 
Interorbital space deeply concave .... 4. fry, p. 223. 
Head very much elevated; tympanum 
VASUMMON Yok te ore aoc te koe Cee 5. cornuta, p. 224. 
B. A bony dorsal shield. 
Head with symmetrical ridges........ 6. dorsata, p. 225. 
IIL. Upper eyelid slightly pointed, triangular. 
Aspony dorsal sbieldi .'.'.>.(aene ase 7. ornata, p. 225. 
IV. Upper eyelid simple. 
No large gland on the calf .......... 8. americana, p. 226. 
A large paratoid-like gland on the calf. 9. cultripes, p. 226. 
The tip of the fourth toe does not reach 
heyond the eye |. ...cce#tecreret er 10. leyboldi, p. 227. 
1. Ceratophrys bigibbosa. 
Ceratophrys boiei, Hensel, Arch. f. Naturg. 1867, p. 121. 
bigibbosa, Peters, Mon. Berl. Ac. 1872 2, p 30, 
Resembles C. boiei, but differs by remarkable characters. The 
upper eyelid is not produced into a horn, but bears several pointed 
papille, as in Asterrophrys turpicola. There is a round swelling of 
the skull, resembling a paratoid, above and somewhat behind the 
eye. No dermal ridge on the back. This species is founded on a 
young specimen (36 millim.). 
Rio Grande do Sul, Brazil. 
2. Ceratophrys appendiculata. (Piare XV. fig. 1.) 
Ceratophrys appendiculata, Giinth. Ann. § Mag. N. H. (4) xi. p. oe 
cafferi, Camerino, Att. Ac. Torin, xiv. p. 880. 
Vomerine teeth in two small groups between the choane. Head : Se 7 £ 
large, depressed ; nostril nearer the eye than the tip of the snout ; 
snout terminating in a short triangular flap ; upper eyelid produced 
in a horn-like appendage, the length of which is more than the 
greatest orbital diameter ; interorbital Space concave; tympanum 
hidden. First and second fingers equal; toes webbed at the base ; 
subarticular tubercles well developed ; ; Inner metatarsal tubercle 
oval, blunt; no tarsal fold. The hind limb being carried forwards 
ee 
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