FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 



221 



nostrils more lateral than superior, nearer to tip of snout than to eye, 

 separated from each other by an interval equal to their distance from 

 eye. Canthus rostralis well defined, the loreal region concave, the 

 upper lip flaring out at an obtuse angle below it. Eye large, its 

 diameter nearly equal to its distance from end of snout; interorbital 

 diameter barely as great as that of the wide upper eyelid which is 

 clearly set off from the top of the head. Pupil transverse. Tym- 

 panum rather indistinct, small, without a prominent encircling rim, its 

 diameter equal to one-third that of the eye, separated from eye by an 

 interval of 1)^ times its own diameter. Fingers free, without lateral 

 ridges, the tips of the second, third, and fourth dilated with large 

 disks, notched at the tips (heart-shaped), that of the third finger 



Figure 21.— Basanitia lacUa, MP 828 (type): a, Dorsum X 1; i, profile X 1; c, foot X 2; 



d, hand X 2. 



larger than the tympanic area; tip of first finger rounded and ball-like 

 but scarcely dilated; fourth finger longer than second, reaching nearly 

 to base of disk of third; no rudiment of a poUex; subarticular tubercles 

 single, strongly developed, but carpal callosities scarcely evident; toes 

 free, without lateral ridges, all their disks enlarged and notched, that of 

 the fourth toe larger than the others but much smaller than those of the 

 fingers, covering a little less than the area of the tympanum; fifth toe 

 very slightly longer than third, reaching to base of antepenultimate 

 phalanx of fourth; a small but prominent oval inner metatarsal 

 tubercle and a weaker smaller outer one; subarticular tubercles of toes 

 very well developed; a prominent tubercle on heel, but no tarsal ridge. 

 Body rather stout, in postaxillary region greater than greatest width 

 of head; when hind leg is adpressed, heel reaches to center of eye; when 

 limbs are laid along the body, knee and elbow are well separated; 

 when hind legs are bent at right angles to body, heels overlap. Skin 



