FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 185 



fairly prominent, its diameter equal to its distance from end of snout; 

 interorbital diameter about 1% times the width of upper eyelid and 

 IK times the distance between nostrils. Tympanum distinct, a little 

 less than one-half the eye diameter, separated from eye by an interval 

 equal to one-half its own diameter. Fingers one-third webbed, 

 fourth much longer than second and extending to base of disk of 

 third, which covers three-fourths of the tympanum; a distinct rudiment 

 of a pollex visible; toes nearly three-fourths webbed, third shorter 

 than fifth, disk of fourth as large as that of third finger and likewise 

 covering about three-fourths of the tympanum; a larger inner and a 

 very small, weak, outer metatarsal tubercle, a heavy skinfold across 

 heel, but no true dermal appendage; a slight glandular ridge along 

 outer surface of tarsus, but none on inner border. Body rather 

 elongate, in postaxillary region slightly wider than head. When 

 hind leg is ad pressed, heel reaches to center of eye; when limbs are 

 laid along the sides, knee and elbow greatly overlap; when hind legs 

 are bent at right angles to the body, heels considerably overlap. 

 Skin of upper parts very finely shagreened; tympanic ridges scarcely 

 apparent; skin of throat and beUy coarsely shagreened, that of vocal 

 pouch very minutely so; a skinfold across throat, followed by the 

 vocal pouch which, when deflated, forms eight longitudinal folds, the 

 outermost of which extends into the axilla. 



Dimensions. — Head and body 31 mm.; head length 9 mm., width 

 9 mm.; femur 13 mm.; tibia 15 mm.; foot 13 mm.; hand 8.5 mm. 



Mathematical analysis (in percentages of the total length) : 



Color in alcohol. — Immaculate pinkish buff above and below, the 

 veins of the legs showing through the translucent skin. 



Remarks. — The muscular contraction after death of the head and 

 fore part of the body is not nearly so pronounced in this form as in 

 planicola. The adpressed heel reaches only to the posterior corner 

 of the eye in three, and to the center of the eye in one specimen. 

 USNM 96693 has a distinct dorsal pattern of dark elongate spots on 

 the back, and an irregular X-shaped mark between the eyes, while 

 two of the remaining specimens show pale traces of this pattern. 



In the small series available, I find a significant difference in the 

 length of the femur, this member being shorter in orophila than in 



