FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 295 



heavy supratjrmpanic ridge leaving posterior corner of eye and ending 

 on the shoulder; posterior surface of femur finely gi-anular; skin of 

 lower parts finely shagi-eened; no ventral disk or throat fold. Upper 

 arms very strongly developed. 



Dimensions.— Read and body 78 mm.; head length 27 mm., width 



30 mm.; femur 27 mm.; tibia 38 mm.; foot 37.5 mm.; hand 21 mm. 



Dimensions of the type of Ololigon abbreviatus taophora, MP 432, 



are: Head and body 46 mm.; head length 17.5 mm., width 19 mm.; 



femur 24.5 mm.; tibia 27 mm. 



Color in alcohol .—'DoTsnm drab to fawn color with a wide chocolate 

 band between the eyes, and two large, more or less rectangular 

 chocolate rhombs on the back, their anterior and posterior edges 

 accented with pearl gray. A dark brown loreal stripe, continued 

 behind the eye and below the tympanum, the rest of the upper lip 

 pearl gray, with a brown mottling towards the mouth-openii^ . 

 Suprarympanic ridge outlined with dark brown. Legs and arms 

 ecru-drab with coarse, irregular, chocolate patches becoming fairly 

 regular crossbars on the tibia. Venter buff, with small darker spots 

 scattered over throat, chin, and chest. Posterior femur buff, with 

 u-regular brown mottlings; a fairly distinct dark anal patch. Tips of 

 toes and fingers pale buff, palms and soles darker. Sides of body with 

 fine brown reticulations on a buff ground. 



Color in life— The coloration of a living specimen from Tijuca, 

 USNM 97415, was as follows: Iris bright ochraceous rufous, almost 

 dragons-blood red below; dorsum dark olive-buff to greenish drab, 

 with dark seal-brown mottlings; upper lip bright olive-buff, a black 

 fine on canthus and on edge of lip; a bright olive-yellow spot behind 

 axilla on right side only; venter dark fawn color posteriorly, hght clove 

 brown anteriorly, with white vermiculations ; femur with black cross- 

 bands, its posterior surface spotted with lemon or olive-yeUow. A 

 smaller specimen, USNM 97416, is similar but lighter, and \vithout so 

 much dark mottling above. 



Variations— The variations in critical characters have been recorded 

 for the 22 adults in the U. S. National Museum as well as m the 4 

 belonging to the Museu Paulista. All efforts to correlate geographic 

 distribution with variation in any definite character were unavailing. 

 Measurements and characters of the most northerly frogs from Esptrito 

 Santo and Minas Gcrais feU entirely withm the limits of those from 

 Rio de Janeiro and Sao Paulo. The tympanum may be two-thnds to 

 four-fifths the eye diameter, separated from the eye by an interval 

 between one-quarter and three-quarters of its ovm diameter, without 

 regard to locality. The median dorsal skin is usually granular, but 

 often fau-ly smooth, while the lateral region is heavily tubercular or 

 only moderately granular. The ventral disk may be weakly or very 



