FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 365 



merging with the flat, slanting loreal region, which is scarcely set off 

 from the bulging upper lip; eye very small, only slightly projecting, 

 its diameter two-thirds its distance from tip of snout, equal to its 

 distance from nostril; upper eyelid narrow, one-third the interorbital 

 width. Body very stout, in postaxillary region about twice the 

 width of head. Fingers short, free, with distinct lateral ridges, 

 fourth much longer than second, reaching to base of penultimate 

 phalanx of third ; two or three moderate palmar calluses ; metacarpal 

 tubercles well developed. Toes with a slight trace of web and well- 

 marked lateral ridges, third longer than fifth, reaching nearly to base 

 of penultimate phalanx of fourth; a small inner but no outer meta- 

 tarsal tubercle, the other tubercles on toes well developed; no tarsal 

 ridges. When hind leg is extended forward, heel fails to reach axilla; 

 when limbs are laid along the sides, knee and elbow are widely sepa- 

 rated; when hind legs are bent at right angles to body, heels touch. 

 Skin above minutely pustular, with a few larger glands around anus 

 and on posterior femur; venter also minutely pustular; indications of 

 a skinfold across back of head; a pair of heavy lateral skinfolds from 

 shoulder to groin; a skinfold across chest between axillae. 



Dimensions. — Head and body 36 mm.; head length 8.5 mm., 

 width, 9 mm.; femur 10.5 mm.; tibia 12.5 mm.; foot 14 mm.; hand 

 8 mm. 



Mathematical analysis (in percentage of the total length): 



Color in alcohol. — Dorsum wood brown, immaculate except for a 

 light line along posterior femur; venter buff, immaculate. 



Variations. — While the specimens at hand usually have larger or 

 smaller white spots in the groin, or at least an extension of the hght 

 ventral coloration into that area, they vary considerably in the degree 

 of white on the posterior and lower leg surfaces. The one from 

 Tapera, Pernambuco, has a regular narrow white postfemoral stripe, 

 but it does not continue past the knee, while the lower tibia is thickly 

 covered with anastomosing brown lines like the entire ventral sur- 

 face. The paratype of Hypopachus pearsi, USNM 51215, from 

 Fundaci6n, Colombia, has a wide white area on the posterior femur. 

 Another frog from Colombia, USNM 14718, has a large, very 



