FROGS OF COLOMBIA — COCHRAN AND GOIN 427 



heavily so; the presence of a ventral disk indicated by a fold of skin 

 across the chest, and some extremely loose skin along sides from 

 axilla to groin, outer border of foot serrated or tubercular, and one 

 or more tubercles on heel. Loose skin folds in front of shoulder may 

 indicate external vocal sacs in the male. 



Dimensions. — Head and body, 24 mm.; head length, 9.5 mm.; head 

 width, 9 mm.; femur, 11 mm.; tibia, 12.5 mm.; foot, 11 mm.; hand, 

 7 mm. 



Color in alcohol. — Dorsum cinnamon brown; a wide clove brown 

 stripe beginning at tip of snout, continuing along canthus and above 

 tympanum, and widening on the sides, becoming less distinct, then 

 fading out half-way to groin; upper lip dark russet brown, unspotted; 

 legs with two or three dark diagonal bars; venter russet to drab, 

 immaculate; a dark postanal patch. 



Remarks. — The adpressed heel extends between the center of the 

 eye and the nostril in over 80 percent of the examples at hand. In 

 the remainder the heel reaches the snout tip or, rarely, a little beyond. 

 The heel usually has a glandular ridge, or from one to several small 

 tubercles, with an occasional frog having from one to three larger 

 and more distinct heel tubercles. The toes are webbed at the base in 

 all examples seen, although the webbing is often very slight. Some- 

 times a small tubercle appears at the tip of the snout, and frequently 

 several such tubercles occur on the upper eyelid. Usually a V- or 

 W-shaped gland emphasized with dark outlines may be seen between 

 the shoulders in adults; in young frogs the glands may appear in the 

 shape of a flattened hexagon. Dorsolateral folds are present in CNHM 

 69729-30. 



Some examples are much darker than the specimen described here, 

 and little of their dorsal patterns can be discerned. The sides may be 

 heavily spotted or streaked with black, usually concentrated in the 

 groin and often extended onto the anterior femur. In most of the 

 pale examples the venter is immaculate, but in darker individuals 

 the belly is often heavily suffused with small slate-colored dots and 

 spots, especially on throat and chest. The soles and palms are also 

 slate in the darker frogs, but the disks are a much lighter gray. 



Specimens Examined 



COLOMBIA 



Antioquia: Andes, AMNH 14078, 14091-3, 14095, 14097, 14105, 14109-11, 

 14115, 14117, 14120, 14125-6, 14128-9, 14134, 14147 (in poor condition); 

 Angel6polis, AMNH 14108, 14012, 38791, 38826 (juv., in poor condition); 

 Caicedo, CNHM 69729-30, 69733-4; Jeric6, MCZ 24894; Medellin, AMNH 

 38831, 38838, 38890, 39959, 39963, MLS 166, 166a-b; Sampedro (=San 

 Pedro), AMNH 38758, 38762, MCZ 24901-2, MLS 401; Santa Rita Creek, 

 AMNH 1360 (unusual color); Santa Rosa, AMNH 39456, 39458; Sons6n, 



