256 U.S. NATIONAL MUSEUM BULLETIN 2 88 



of throat and chest finely granular, that of belly coarsely granular, 

 and lower surfaces of thighs uniformly and very finely granular; 

 traces of a skinfold across chest. Adult male, vocal sac apparent as 

 wrinkles on the throat. Skin of head not co-ossified with skull, roof 

 of skull not exostosed. 



Dimensions. — Head and body, 50.5 mm.; head length, 15.4 mm.; 

 head width, 17.6 mm.; femur, 24.5 mm.; tibia, 26.5 mm.; heel-to-toe 

 39.2 mm.; hand, 23 mm. 



Color in alcohol. — Dark bluish gray above, cadaverish, brownish 

 gray below. All of the dorsal surfaces are marked with tiny, black, 

 pencil-like flecks and spots. The anterior and posterior surfaces of the 

 thighs are lightly mottled but not nearly so heavily or conspicuously 

 so as in H. labialis platydactyla. The ventral surfaces seem to be with- 

 out pattern. The nuptial pads on the thumbs are very dark gray. 



Remarks. — The type series of this form, which is apparently valid, is 

 now represented by a single specimen, the type, as all the paratypes 

 were destroyed during World War II. The three specimens from 

 Gutierrez are the only ones we know of other than the type. 



We are greatly indebted to Dr. Hellmich for the privilege of study- 

 ing and illustrating the type specimen. 



Specimens Examined 

 COLOMBIA 



Cundinamaeca: Gutierrez, MCZ 16032-3, 16276; Laguna de la Guitarra, 

 Paramo de Sumapaz, ZSM 102/1937 (type). 



Hyla labialis platydactyla Boulenger 



Plate 34a-c 



1905. Hyla platydactyla Boulenger, p. 183 (type locality, Merida, Venezuela). — 

 Nieden, 1923, p. 262.— Lutz, 1927, p. 39.— Rivero, 1961, p. 115; 1963a, p. 

 93.— Gorham, 1963, p. 22. 



1961. Hyla vilsoniana meridensis Rivero, p. 131 (type locality, Meiida, Vene- 

 zuela), 1963a, p. 93; 1964a, p. 302. 



Diagnosis. — A frog of the labialis group with a well-developed patag- 

 ium which is bright blue in life. 



Hyla labialis platydactyla differs from H. 1. labialis and H. I. krausi in 

 that the posterior faces of the thighs are distinctly mottled. 



Description— MZVM 92162, from Chita, Boyaca, Colombia. 

 Vomerine teeth in two short, nearly transverse series lying fairly 

 close together between the small, rounded choanae; tongue three- 

 fourths as wide as mouth opening, very broadly cordiform, its pos- 

 terior border free and unnotched. Snout short, rounded when viewed 

 from above, nearly truncate and very slightly sloping in profile, the 

 upper jaw extending but slightly beyond lower; nostrils nearly lateral, 



