FROGS OF COLOMBIA — COCHRAN AND GOIN 237 



lying close together on a level with the posterior borders of the small, 

 rounded choanae; tongue one-half as wide as mouth opening, cordi- 

 form, its posterior border very slightly free and very shallowly notched. 

 Snout long, pointed when viewed from above, pointed in profile, the 

 upper jaw extending considerably beyond lower; nostrils more lateral 

 than superior, considerably projecting, their distance from end of 

 snout about one-third that from eye, separated from each other by 

 an interval equal to about two-thirds their distance from eye. Canthus 

 rostralis well defined; loreal region flat and very nearly vertical, the 

 upper lip not flaring out appreciably below it. Eye moderate in size 

 but prominent, its diameter equal to its distance from nostril; palpebral 

 membrane not reticulate; interorbital distance greater than width of 

 upper eyelid, which is relatively narrow and slightly less than distance 

 between nostrils. Tympanum distinct, about three-fifths the diameter 

 of eye, separated from eye by a distance equal to one-fourth its own 

 diameter. Fingers without webs, fourth finger but slightly longer than 

 second, failing to reach to disk of third by the diameter of a disk; 

 disk of third covers about one-fourth the tympanic area; no project- 

 ing rudiment of a poll ex; no ulnar ridge. Toes about one-half webbed, 

 the web on fourth toe reaching the middle of the antepenultimate 

 phalanx (webs very delicate and tear at a touch), third and fifth toes 

 subequal, disk of fourth toe covering about one-fifth the tympanic 

 area; a distinct oval inner and a much smaller but distinct rounded 

 outer metatarsal tubercle; no tarsal ridge; no dermal appendage on 

 heel. Body 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 slightly. No patagium. Skin of upper parts smooth; a rather 

 narrow glandular ridge encircling upper part of tympanum; skin of 

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

 uniformly and finely granular; traces of a skinfold across chest; 

 adult male, vocal sac apparent as subgular wrinkles. Skin of head not 

 co-ossified with skull, roof of skull not exostosed. 



Dimensions. — Head and body, 15.6 mm.; head length, 6.5 mm.; 

 head width, 5.5 mm.; femur, 8 mm.; tibia, 9.9 mm.; heel-to-toe, 

 12.1 mm.; hand, 4.8 mm. 



Color in alcohol. — A dark, striped frog. The dorsum is medium 

 brown with five longitudinal dark stripes as follows: a medium 

 stripe originates between the eyes and terminates posteriorly above 

 the urostyle; a pair of dorsolateral stripes originate one behind each 

 eye and terminate posteriorly to the sacral hump on each side; a 

 pair of lateral stripes originate on the tip of the snout, each passes 

 posteriorly through the nostril, f along the canthus rostralis, through 



