FROGS OF COLOMBIA — COCHRAN AND GOIN 



309 



from that species in having only one or two rows of spots down the 

 middle of the back. 



Description. — UF 8503 (holotype), from Leticia, Amazonas, Co- 

 lombia. Vomerine teeth in two small oval patches between the choanae , 

 each patch about the size of a choana, the distance between the 

 patches about equal to the distance between a patch and a choana. 

 Tongue nearly round, very slightly notched and slightly free behind ; 

 its diameter about one-half the width of mouth. Head broad, its 

 width slightly greater than distance from snout to occiput; snout 

 somewhat triangular as seen from above with the tip broadly rounded ; 

 upper jaw projecting but slightly beyond tip of lower; eyes moderate 

 in size and not pronouncedly protuberant; diameter of eye about 

 equal to distance from eye to nostril; nostril near tip of snout; inter- 

 orbital space about equal to diameter of individual eye. Tympanum 

 distinct but small, not more than one-third the diameter of eye; 

 distance from eye to tympanum slightly less than diameter of the 

 latter. Upper eyelids, top of head, and dorsum smooth. Well-developed 

 disks on all fingers and toes; disks of second and third fingers about 

 equal to size of the tympanum. Fingers not particularly slender; 

 fingers 2, 3, and 4 webbed to bases of their penultimate phalanges, 

 with a narrow margin of web extending to base of disk of fourth finger; 

 fingers 3-4-2-1 in order of decreasing length. Toes slender, fully 

 webbed except for fourth toe which is webbed to the base of penulti- 

 mate phalanx; toes 4-3-5-2-1 in order of decreasing length. Heels 

 slightly overlapping when legs are flexed with femora held at right 

 angles to the body; knee and elbow in contact when limbs are pressed 



Figure Zb.—Hyla laynei, holotype, UF 8503 (X 2). 

 337-262—70 21 



