296 U.S. NATIONAL MUSEUM BULLETIN 288 



Variation. — As in Hyla leucophyllata, there is a marked difference 

 in the size of breeding individuals of the two sexes. Two fresh females 

 from the Rio Manso, Cordoba, measure 36.8 and 38 millimeters in 

 head and body length, while the four largest males from the same 

 series (CJG 2368-82) measure 26.3, 27.5, 28, and 29.3 millimeters. 



In pattern there is great variation. The female described and 

 figured above is the most gaudy of the lot. In all other specimens from 

 the Rio Manso three basic types of pattern are noted. In one type 

 the entire top of the head and dorsum and the tops of the skanks are 

 silvery white. In another the entire top of the head and dorsum and 

 the upper surfaces of the shanks are tan. In the third type the general 

 tone of the dorsal ground color is light brown with a dark brown 

 dorsal figure that begins between the eyes, narrows as it passes 

 posteriorly, then widens and terminates above the sacral hump, thus 

 forming a sort of hour-glass figure on the back. In the female from 

 the Rio Sucio, Antioquia, the top of the head and dorsum are white 

 with about a half-dozen small, scattered brown marks on the back 

 and a brown interocular bar. In all of the specimens the white mark 

 on the upper j aw between the lip and the eye is present. 



Specimens Examined 

 COLOMBIA 

 Antioquia: Rio Sucio, CNHM 82014. 

 C6rdoba: Rio Manso, CJG 2368-82. 



Hyla sarayacuensis Shreve 



Figure 32 



1935. Hyla leucophyllata sarayacuensis Shreve, p. 215 (type locality, Sarayacu, 



Ecuador). 

 1955. Hyla leucophyllata. — Cochran, 1955, p. 115. 

 1957. Hyla sarayacuensis. — Goin, 1957, p. 60. — Goin and Layne, 1958, p. 106. 



Diagnosis. — A brightly colored frog of the leucophyllata group with a 

 dorsal pattern of light marks on a dark background. 



From Hyla rossalleni, which is probably its nearest relative, H. 

 sarayacuensis differs in having the dorsolateral stripes complete, in 

 having a triangular pale area on top of the head, and in lacking large, 

 bright, white supraocular spots. From H. leucophyllata it differs in 

 lacking a large, distinct, rectangular or triangular spot on the back 

 that is completely surrounded with white and in lacking the large 

 white daub on each leg that nearly covers the dorsal surface of the 

 shank. 



Description. — UF 8521-1, an adult male from Leticia, Amazonas, 

 Colombia. Vomerine teeth absent, the choanae small, somewhat 

 oblong; tongue three-fourths as wide as mouth opening, rounded, its 

 posterior border slightly free and shallowly notched. Snout short, 



