2. Lips barred; flanks cream-colored with bold brown or black mottling in groin; posterior surfaces of thighs brown with cream-colored flecks _S. baudini_, p. 289 Lips not barred; narrow white labial stripe present; flanks not cream-colored with bold brown or black mottling in groin; posterior surfaces of thighs variable 3 3. Flanks and anterior and posterior surfaces of thighs dark brown with large pale blue spots on flanks and small blue spots on thighs _S. cyanosticta_, p. 303 Flanks cream-colored with fine black venation; posterior surfaces of thighs pale brown with or without darker flecks or small cream-colored spots _S. phaeota_, p. 308 4. Fingers having only vestige of web; diameter of tympanum two-thirds that of eye; dorsum pale yellowish tan with pair of broad dark brown stripes _S. puma_, p. 314 Fingers about one-half webbed; diameter of tympanum about one-half that of eye; dorsum variously marked with spots or blotches 5 5. Snout short, truncate; vocal sacs in breeding males dark gray or brown; blue spots on flanks and posterior surfaces of thighs _S. sila_, p. 318 Snout long, sloping, rounded; vocal sacs in breeding males white; cream-colored or pale blue flecks on flanks and posterior surfaces of thighs _S. sordida_, p. 323 Key to Tadpoles 1. Pond tadpoles; tail about half again as long as body; mouth anteroventral 2 Stream tadpoles; tail about twice as long as body; mouth ventral 5 2. Labial papillae in two rows 3 Labial papillae in one row 4 3. First upper tooth row strongly arched medially; third lower tooth row much shorter than other rows; dorsal fin deepest at about two-thirds length of tail; tail cream-colored with dense gray reticulations _S. puma_, p. 314 First upper tooth row not arched medially; third lower tooth row nearly as long as others; dorsal fin deepest at about one-third length of tail; tail tan with brown flecks and blotches _S. baudini_, p. 289 4. Dorsal fin extending onto body _S. phaeota_, p. 308 Dorsal fin not extending onto body _S. cyanosticta_, p. 303 5. Mouth completely bordered by two rows of papillae; inner margin of upper beak not forming continuous arch with lateral processes; red or reddish brown markings on tail _S. sordida_, p. 323