FROGS OF COLOMBIA — COCHRAN AND GOIN 205 



toe covering about one-half the tympanic area; a distinct oval inner 

 but no distinct outer metatarsal tubercle; a weak but distinct tarsal 

 ridge; an elongate dermal appendage on heel. Body somewhat elon- 

 gate, in postaxillary region a little narrower than greatest width 

 of head; when hind leg is adpressed, heel reaches almost to nostril; 

 when limbs are laid along the side, knee and elbow overlap consider- 

 ably; when hind legs are bent at right angles to body, heels overlap 

 greatly. No patagium. Skin of upper parts very finely granular; 

 a narrow, quite distinct glandular ridge encircling upper part of 

 tympanum, then passing downward to angle of jaw; skin of throat 

 and chest smooth, that of belly and lower surface of thigh uniformly 

 and finely granular; no trace of a skinfold across chest; adult female, 

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

 not exostosed. 



Dimensions. — Head and body, 53.7 mm.; head length, 19.4 mm.; 

 head width, 20 mm.; femur, 27.2 mm.; tibia, 29.7 mm.; heel-to-toe, 

 38 mm.; hand, 15.5 mm. 



Color in alcohol. — A dark frog. On the very dark dorsum an even 

 darker blotch can be distinguished. This blotch anteriorly has a narrow 

 ramus that extends to the hind corner of eye on each side and thus 

 makes a Y-shaped pattern. Posteriorly the blotch again divides to 

 send a ramus to each lateral extension of the sacral hump. The rami 

 are in turn connected by a narrow bar at the level of the sacral hump, 

 from the middle of which two posteriorly projecting horns diverge. 

 The entire side, from axilla to groin, is marked with distinct, light- 

 centered vertical bars. Similar bars are present on the anterior face of 

 each thigh. These continue over the dorsal and posterior surfaces of 

 the thighs but are less conspicuous there due to the more intense 

 pigmentation of the ground color. Less-distinct narrow cross-bars are 

 also present on the shanks. The ventral surfaces are immaculate. 



Variation. — When the above-described specimen (MLS 64) is com- 

 pared with one of the cotypes of appendiculata (BM 74.7.16.7 [1947.- 

 2.13.7]) from the interior of Brazil, several differences can be noted. In 

 the cotype of appendiculata, the tympanum is about three-fourths the 

 diameter of the eye and is in contact with it, while in MLS 64 the 

 tympanum is little more than half the diameter of the eye and is sepa- 

 rated from it by one-half its own diameter. In the cotype there is a 

 definite gap between the vomerine series; in the MLS specimen they 

 meet on the midline, the two series being continuous. The cotype is 

 somewhat faded and at present the dorsal pattern consists of narrow, 

 pencil-like, transverse markings across the tan dorsal background; in 

 the MLS specimen, which is quite dark dorsally, the dorsal markings 

 are broad rather than pencil-like. The patterns of the sides and the 

 thighs seem to be about the same in both specimens. We strongly sus- 



