FROGS OF COLOMBIA — COCHRAN AND GOIN 323 



distinct, about four-fifths the diameter of eye, separated from eye by a 

 distance equal to one-half its own diameter. Fingers webbed at base, 

 fourth finger considerably longer than second, reaching to middle of 

 disk of third which covers about one-half the tympanic area; no pro- 

 jecting rudiment of a pollex; no ulnar ridge. Toes more than one-half 

 webbed, the web on fourth toe reaching base of penultimate phalanx, 

 third and fifth toes subequal, disk of fourth toe covering about one- 

 third the tympanic area; a distinct oval inner and a smaller but equally 

 distinct rounded outer metatarsal tubercle; no tarsal ridge; no dermal 

 appendage on heel. Body rather elongate, in postaxillary region a little 

 narrower than greatest width of head; when hind leg is adpressed, heel 

 reaches tip of snout; when limbs are laid along the side, knee and elbow 

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

 heels overlap appreciably. No patagium. Skin of upper parts rather 

 smooth; a distinct but narrow glandular ridge passing above tym- 

 panum; skin of throat and chest smooth; that of belly and lower sur- 

 face of thigh uniformly and very finely granular; traces of a skinfold 

 across chest. Adult gravid female, no vocal sac. Skin of head not co- 

 ossified with skull, roof of skull moderately exostosed. 



Dimensions. — Head and body, 54.5 mm.; head length, 18.3 mm.; 

 head width, 17.9 mm.; femur, 27.1 mm.; tibia, 31.2 mm.; heel-to-toe, 

 38.2 mm.; hand, 17.1 mm. 



Color in alcohol. — Dorsum dark brown. A very dark brown (nearly 

 black) facial stripe runs from the tip of snout across the loreal region, 

 through eye and tjmipanum to fade out above the insertion of arm. 

 Dorsally there is an indistinct dark blotch on top of the head, another 

 somewhat bilobed one above the shoulders, and behind this are a 

 couple of even less distinct transverse bars across the back. The arms, 

 legs, and feet are each crossed with broad, rather distinct dark bands. 

 The entire ventral surface is a cadaverish gray with dusky mottlings 

 present on the lateral portions of chin and throat. 



Remarks. — The specimen described and illustrated (MCZ 28042) 

 has been directly compared with the types of leprieuri, planiceps, 

 and vilarsi by the junior author and there seems to be no doubt that 

 all are conspecific. Another specimen (CNHM 697 1G) has been directly 

 compared with the types of planiceps and vilarsi and these, likewise, 

 are considered conspecific. 



It is not surprising that this wide-ranging species has been described 

 at least three times, and, indeed, it is not unlikely that there are other 

 nominal forms synonymous with it, although we have not as yet seen 

 types of any material other than those mentioned above that we would 

 assign to the synonymy at the present time. 



