FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 97 



side of forearm; toes three-fourths webbed, third and fifth subequal, 

 disk of fourth only slightly smaller than largest finger disk and 

 covering about one-third the tympanic area ; a distinct oval inner but 

 no outer metatarsal tubercle; a narrow low ridge along inside of 

 tarsus, and a wider one on outside of tarsus extending onto the heel 

 but not forming a dermal appendage or tubercle; body quite elongate 

 and moderately slender, in postaxillary region slightly less than 

 greatest width of head; when hind leg is adpressed, heel reaches con- 

 siderably beyond tip of snout; 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 minutely glandular, more coarsely glandular between the eyes; 

 irregular glandular lines running down the back, with a coarser 

 dorsolateral gland on each side of the back and a heavy lateral one 

 extending behind the ear halfway down the sides as a continuation of 

 the heavy supratympanic ridge; skin of chin minutely granular, of 

 chest almost smooth, of belly and lower thighs heavily granular; a 

 heavy skinfold across the chest, and another one anterior to it where 

 the large median external vocal pouch ends. 



Dimensions. — Head and body 69 mm.; head length 22 mm., width 

 22 mm.; femur 36 mm.; tibia 40 mm.; foot 29 mm.; hand 19 mm. 



Color in alcohol. — Dorsal ground color dark drab-gray, with irregular 

 coarse marblings of slate color beginning between the eyes and con- 

 tinuing to end of body; loreal region slate gray, fading slightly towards 

 the upper lip, which has a narrow black border, breaking up beneath 

 the eye to large dark spots; tympanum and surrounding area slate 

 color, with an irregular stripe of the same color continuing along the 

 glandular lateral fold from the tympanum; femur with 7 to 9 heavy, 

 wide, slate bands extending down in front and behind to the granular 

 lower surface, regular and parallel on top and in front, but breaking 

 up into coarse dark spots or A-shaped marks behind; forearms irregu- 

 larly crossbanded with slate; sides of body with heavy vertical slate 

 markings especially prominent towards the groin; top of foot and 

 tarsus with slate-colored bars; a wide olive-buff line along outside of 

 tarsus and forearm following the low glandular ridges; ventral surface 

 ohve-buff to pea green, the lower labial borders immaculate, then a 

 heavy spotting of slate on chin, lightening to a dull slate suffusion on 

 sides of throat; anterior part of chest nearly immaculate; a few 

 scattered dark dots in front of shoulders and just behind the skinfold 

 across the chest; remainder of ventral surfaces immaculate except for 

 some small dark postanal dots. 



Variations. — The degree of development of the pollex is extremely 

 variable: In MCZ 12125, from Maraj6 Island, it can scarcely be 

 noticed; in MCZ 12124, from the same place, it is a distinct knobHke 



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