FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 141 



Color in life. — One of the Alto da Serra series was described a few 

 days after being collected, as follows: Above, chromium to pea 

 green, with indistinct sepia spots. Hind legs crossbarred indistinctly 

 with dark, the light spots on posterior thighs being olive yellow. 

 Lower surfaces pale primrose yellow. The females are a deep clove 

 brown above, on which the citron-yellow spots on posterior thighs 

 stand out strongly. There are also citron-3rellow spots in groin, 

 halfway on sides of axilla, and on anterior side of thighs. 



Variations. — The largest of the Alto da Serra specimens is a female, 

 USNM 97780, measuring 49 mm. in head and body length. Its 

 entire dorsal ground color is clove brown, mth a few scattered, very 

 minute white dots on head, back, and tibia. The primrose j-ellow 

 spots in the groin and on the fore and hind parts of the femur show up 

 with great brilliance against the contrasting dark ground color. The 

 whole ventral surface is covered by small dark dots, the only immacu- 

 late area being that in the depths of the very conspicuous skinfold 

 across the chest. The soles of the hands and feet are a uniform dull 

 slate in this individual. A young male, USNM 97779, has a similar 

 dark, clove-brown coloring on the head and back, but the upper parts 

 of the femur and the foot are drab-gray. It is also less closely dotted 

 on the lower surfaces. The other specimens, all apparently males, 

 from Alto da Serra, range from slate-gray to olive-gray above, with 

 yellow spots consequently much less prominent. The largest of 

 these, USNM 97784, measures 42 mm. in head and body. 



The entire series of H. hayii from the State of Sao Paulo shows an 

 extreme amount of variation in almost every character. The snout 

 is rounded in a few examples, but slightly or moderately pointed in 

 most, while it is very pointed and rather elongate from the nostrils 

 forward in some. The interorbital space is relatively narrow (1}^ 

 times the width of the upper eyelid) in many, but relatively wide 

 (1?^ times the eyelid) in some examples. The tympanum varies 

 equally, being extremely large (three-fourths to four-fifths the 

 diameter of the eye) in some, and smaller (one-half or two-thh-ds the 

 eye diameter) in others. The fingers in about half the specimens 

 have distinct rudiments of a web at the base, while the remainder of 

 the frogs show only slight traces and in a few cases scarcely any of the 

 rudiments of a web. The disk of the fourth toe in v,-ell-preserved 

 specimens usually covers about one-half the tympanum, but sometimes 

 when the tympanum is large and the disk is not well developed, it 

 covers only one-third the tympanic area, and in one example where 

 the tympanum is quite small, the disk covers it completely. The 

 adpressed heel reaches to anterior border of eye, to between eye and 

 nostril, and to the nostril in about an equal number of cases; rarely, 

 it extends beyond the tip of the snout. 



