146 U.S. NATIONAL MUSEUM BULLETIN 2 88 



d 2 . Vocal pouch unpaired Gastrotheca 



c 2 . Teeth on parasphenoid Tetraprion 



b 2 . Roof of skull not exostosed. 



c 1 . Vocal pouches with no tendency to be paired. 

 d l . Sacral diapophyses expanded. 



e l . Males with vocal pouch on the posterior margin of the throat 

 region made of a number of longitudinal folds bounded anteriorly 

 and posteriorly by transverse folds; snout pointed and pro- 

 jecting Sphaenorhynchus 



e 2 . Males with vocal sac single but not bounded anteriorly and poste- 

 riorly by transverse folds; in most species snout not strikingly 



pointed and projecting Hyla 



d 2 . Sacral diapophyses rounded. 



e 1 . Tympanum quite distinct Cryptobatrachus 



e 2 . Tympanum indistinct or absent Hyloscirtus 



c 2 . Vocal pouches either at angles of jaws or, if subgular, with a strong 

 tendency to be paired. 



d 1 . Vocal pouches at angles of jaws Phrynohyas 



d 2 . Vocal pouches not at angles of jaws Smilisca 



a 2 . Pupil vertical. 



6 1 . Palpebral membrane reticulate (except in A. calcarifer), first toe shorter 



than second Agalychnis 



b 2 . Palpebral membrane not reticulate, first toe longer than second (except 

 in P. bicolor) Phyllomedusa 



Genus Agalychnis Cope 



1864. Agalychnis Cope, p. 181 (type species, Hyla callidryas Cope). 



Generic diagnosis. — The frogs of this genus may be characterized 

 by the following combination of characters: vertical pupil; palpebral 

 membrane reticulate in all except A. calcarifer; tongue extensively 

 free behind; webbing more or less well developed on hands; first toe 

 shorter than second; vocal pouch of male median and subgular; 

 eyes red in life in many of the species. 



Key to Colombian Species of Agalychnis 



a. 1 A prominent triangular dermal appendage on heel; three phalanges of fourth 

 toe free or nearly free of webs; palpebral membrane not reticulate. 



A. calcarifer 

 a 2 . No prominent triangular appendage on heel; no more than one phalanx of 

 fourth toe entirely free of web; palpebral membrane reticulate. 



A. spurrelli 



Agalychnis calcarifer Boulenger 



Plate 23a 



1902. Agalychnis calcarifer Boulenger, p. 52 (type locality, Rio Durango, 

 Northwestern Ecuador). — Nieden, 1923, p. 335. — Dunn, 1931, p. 415. 



1950. Phyllomedusa calcarifer. — B. Lutz, 1950, p. 601. — Funkhouser, 1957, p. 

 24.— Gorham, 1963, p. 23. 



