1. Larger frogs (males to 49 mm. snout-vent length); thighs strongly barred; supratympanic fold black; dorsum blotched or spotted 2 Smaller frogs (males to 40 mm. snout-vent length); thighs weakly barred or plain; supratympanic fold pale brown; dorsum usually having linear pattern 3 2. Dorsum tuberculate; snout subacuminate; vocal sac flecked with brown; tarsal fold rudimentary; web absent between fingers; black spots absent in scapular region _H. boulengeri_ Dorsum smooth; snout pointed; vocal sac dark gray; tarsal fold absent; trace of web between fingers; two or more elongate dark spots in scapular region _H. foliamorta_ 3. Snout-vent length more than 30 mm.; tympanum 2/3 to 3/4 diameter of eye; prevomerine elevations about size of choanae 4 Snout-vent length less than 30 mm.; tympanum less than 1/2 diameter of eye; prevomerine elevations smaller than choanae 5 4. Thighs mottled posteriorly; discs on fingers about 1/2 size of tympanum; faint dark line from nostril to eye _H. rubra_ Thighs faintly barred or plain posteriorly; discs on fingers about size of tympanum; distinct dark line from nostril to eye _H. elaeochroa_ 5. Dorsum brown with irregular dorsolateral stripes and interrupted paravertebral stripes; two transverse bars on shanks; interorbital bar present _H. staufferi staufferi_ Dorsum gray with complete dorsolateral and paravertebral stripes; longitudinal stripe on shank; interorbital bar absent _H. staufferi altae_ Key to Known Tadpoles 1. Entire lower beak black; beaks moderate-sized, serrate; dorsal fin high, extending to middle of back 2 No more than half of lower beak black; beaks small, finely serrate; dorsal fin lower, barely extending onto body 3 2. Papillae present only laterally _H. boulengeri_ Papillae present laterally and ventrally _H. foliamorta_ 3. Distinct brown stripe from nostril to eye; two stripes below eye, _H. elaeochroa_ Faint stripe from nostril to eye; no stripe below eye _H. staufferi_ ACCOUNTS OF SPECIES AND SUBSPECIES _Hyla boulengeri_ (Cope) _Scytopis boulengeri_ Cope, Bull. U.S. Natl. Mus., 32:12, December 1, 1887 [Holotype.--USNM 13974, from "Nicaragua"; J. A. McNiel, collector].