FROGS OF COLOMBIA — COCHRAN AND GOIN 269 



disks better developed; the hind leg reaching to the nostril when 

 adpressed instead of just to the eye; the knee and elbow touching when 

 the limbs are laid along the side; a definite patagium; larger size 

 (the type had a head-and-body length of 17.8 mm.) ; in lacking a white 

 mark on the lip ventral to the naris; in having the dorsolateral light 

 stripe stop abruptly anterior to the groin rather than turning down 

 and passing into the ventral light color of the venter; and in having 

 the tips of the heels pale. 



The variation in structure in the series from Rio Manso is not 

 noteworthy. The variation in pattern is striking. The only elements 

 of pattern common to all the individuals are the light line on the 

 can thus, the white spots below the eye, the oval white mark surrounded 

 by dark on the anterior face of the thigh, and the clear ventral surfaces. 

 Dorsally the pattern ranges from dark chocolate brown with distinct 

 dorsolateral stripes (like the type and the one described above) to a 

 pale gray dorsum speckled with dusky in which the only semblance 

 of a dorsolateral stripe is a narrow stripe that continues along the 

 upper eyelid posteriorly to above the tympanum. In some specimens 

 the dorsal pattern is a dark brown hour-glass shaped figure running 

 from the eyes to the middle of the back, followed by a broad arched 

 blotch of dark brown. Both of these dark brown marks are on a 

 background of light brown and make a pattern so reminiscent of 

 Hyla minuta that the two could be easily confused except for the fact 

 that H. bokermanni has the oval spot on the anterior face of the thigh 

 and lacks the white line above the vent and on the heels which is 

 so characteristic of H. minuta. 



The largest specimen at hand has a head-and-body length of 

 25 millimeters. 



Remarks. — This species is certainly similar to Hyla rondoniae, 

 which Bokermann recently described from Rondonia (formerly 

 Guapore) Territory in Brazil, and it may be very close to H. luteo- 

 ocellala Roux, which is described from El Mene, Falcon Province, 

 Venezuela. Until such time as a comparison between specimens of 

 these three nominal forms can be made, we feel it best to leave them 

 as nominal species. 



Dr. Medem, who collected the Rio Manso series, tells us that these 

 frogs were breeding in a small pond in the woods after the first heavy 

 rain in a week. He said also that the species previously had been 

 unknown to him. 



Specimens Examined 



COLOMBIA 



C6rdoba: Rfo Manso, CJG 2355-67. 

 BRAZIL: Acre, Tarauaca, WCAB 2881 (type). 



