450 U.S. NATIONAL MUSEUM BULLETIN 2 88 



Key to Colombian Species of Leptodactylus 



a 1 . Toe tips dilated into disks; first finger shorter than second; size to 29.5 



mm L. marmoratus hylaedactylus 



a 2 . Toe tips not dilated into disks: first finger longer than second. 

 b 1 . Two or more strong dorsolateral folds. 

 c 1 . Dorsolateral folds not more than two. 



d l . Dorsolateral folds not extending beyond sacrum; toes with slight 

 fringes; legs marbled with red or orange in life; male with two 

 breast spines and one thumb spine, but no external vocal sac; 



size to 187 mm L. pentadactylus 



d 2 . Dorsolateral folds extending to level of groin, or beyond. 



e 1 . Lateral fringes of toes distinct; no line along posterior femur. 

 /'. Heels not overlapping when bent at right angles to body; vo- 

 merine teeth not reaching to level of choanae; size to 70 mm. 



L. rhodomystax 



f 2 . Heels overlapping considerably when bent at right angles to 



body; vomerine teeth reaching to or beyond posterior level 



of choanae; two breast spines in male; size to 96.5 mm. 



L. insularum 

 e 2 . Lateral fringes of toes absent or faint. 

 /'. A light postfemoral stripe, or at least a trace of one. 



g 1 . A light stripe along margin of upper lip to shoulder; size 



to 61.5 mm L. mystaceus 



g~. No uninterrupted light stripe along upper lip. 



h 1 . Postfemoral stripe narrower and less distinct; the dark 

 canthal stripe sometimes interrupted before reaching eye; 



size to 47.5 mm L. poecilochilus diptychus 



h 2 . Postfemoral stripe wider and sharper; the dark canthal 

 stripe usually reaching the eye; size to 43 mm. 



L. poecilochilus poecilochilus 



P. No white postfemoral stripe; size to 68.5 mm L. rubido 



c i . Dorsolateral folds more than two; snout pointed, projecting well beyond 

 the mouth; fringes of toes absent or slight; a light line or regular 

 series of spots along posterior femur; two black lateral external 



vocal sacs in male; size to 56.5 mm L. sibilatrix 



b 2 . No dorsolateral folds, or very weak ones scarcely extending beyond 



axilla; toes with distinct lateral fringes; male with two thumb spines. 



c 1 . Back uniform brown, or sometimes a longitudinal light midline bordered 



with dark; underparts light except for dark spots on chin and on 



lower femoral surface; yellow or orange ventral tints reduced; size 



to 50 mm L. intermediu s 



c 2 . A dark triangle between the eyes, continued backwards as dark ir 

 regular patches on a lighter ground; no middorsal light line; under- 

 parts darker; dorsum rougher; size to 63.5 mm. 



L. podicipinus pete rsi 



Leptodactylus marmoratus hylaedactylus (Cope) 



Plate 61a-c 



1868. Cyslignathus hylaedactylus Cope, p. 115 (type locality, Napo or Upper 

 Marafion). 



