350 U.S. NATIONAL MUSEUM BULLETIN 2 88 



granular; weak traces of a skinfold across chest; adult gravid female, 

 no vocal sac. Skin of head not co-ossified with skull, roof of skull not 

 exostosed. 



Dimensions. — Head and body, 52.2 mm.; head length, 17.4 mm.; 

 head width, 18 mm.; femur, 27.7 mm.; tibia, 29.9 mm.; heel-to-toe, 

 37.2 mm.; hand, 13.5 mm. 



Color in alcohol. — A light brown dorsally and cadaverish gray 

 below. There are small, inconspicuous, scattered, dark brown spots 

 on dorsum and top of head. The most conspicuous part of the pattern 

 is a series of distinct light spots along each side between axilla and 

 groin. Some of the light spots are nearly half the diameter of the 

 tympanum. These spots are more thickly scattered in region of the 

 groin. Similar but much smaller light spots are present on the posterior 

 surfaces of the thighs. Very faintly discernible dark crossbands are on 

 the dorsal surfaces of the shanks. 



Remarks. — We have seen only a single unquestioned specimen of 

 S. gabbi from Colombia, but we strongly suspect that when adequate 

 collecting is done around the Gulf of Uraba this species may well be 

 found to be common. 



The two specimens from Sutatenza, in Boyaca, are included as 

 gabbi only provisionally. Their slender build and small tympanum 

 separate them from phaeota but a dark postocular stripe and dark, 

 cruciform blotches on the back make them superficially resemble 

 that species rather than gabbi. It is possible that they represent an 

 undescribed race of one of these species but a final decision must be 

 postponed until fresh material is collected. 



Since we are not acquainted with the frogs in Central America, we 

 cannot comment on Taylor's assigning of Hyla saluini of Boulenger to 

 this species. 



Specimens Examined 

 COLOMBIA 



Antioquia: Villa Arteaga, Uraba, CNHM 63893. 



Boyaca.: Sutatenza, MLS 285, 285a. 

 COSTA RICA: Near Sipurio, USNM 30658-9 (cotypes). 



Genus Sphaenorhynchus Tschudi 



1838. Sphaenorhynchus Tschudi, p. 71 (type species, Hyla lactea T)ax\dm — Hyla 

 aurantiaca Daudin). 



Generic diagnosis. — Moderate to small frogs, bright green or 

 yellowish in life; snout very pointed and projecting in lateral view; 

 male with the external vocal pouch made up of longitudinal folds, 

 bounded anteriorly and posteriorly by transverse folds; a posteriorly 

 projecting process on the ischium; reduced number of maxillary teeth 

 (33 on one side being the greatest number now known in S. aurantiacus ; 

 prefrontals not in contact. Very aquatic. 



