FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 299 



Description. — Adult, USNM 97648, Independencia, Petr6polis, 

 Rio de Janeiro. Vomerine teeth in two heavy, transverse, narrowly 

 separated patches between the anterior choanal borders; maxillary 

 teeth well developed; tongue about three-fourths as wide as mouth- 

 opening, broadly cordiform, slightly indented on its free posterior 

 border; a single small tootlilike process in front of lower jaw; snout 

 bluntly rounded when seen from above, truncate in profile, the upper 

 jaw extending slightly bej^ond lower; nostrils more superior than 

 lateral, scarcely projecting, halfway between eye and tip of snout, 

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

 eye. Canthus rostralis rounded; loreal slightly concave and sloping 

 to upper lip border. Eye large, prominent, its diameter equal to its 

 distance from end of snout; interorbital diameter about 1% times that 

 of upper eyelid, equal to interval between nostrils. Tympanum 

 distinct, one-half the diameter of eye, separated from eye by one-half 

 its own diameter. Fingers long, webbed at base, without lateral 

 ridges, fourth longer than second and reaching well toward base of 

 penultimate phalanx of third; a low pad at base of first finger and 

 another on palm; subarticular tubercles scarcely evident; toes free, 

 their tips not dilated, with weak lateral ridges, third and fifth sub- 

 equal, reaching halfway on antepenultimate phalanx of fourth; a large 

 oval inner and a minute round outer metatarsal tubercle; no tarsal 

 ridge; subarticular tubercles v»"eak. Body fau'ly slender, in post- 

 axillary region equal to greatest w^dth of head; when hind leg is 

 adpressed, heel reaches considerably beyond tip of snout; when limbs 

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

 bent at right angles to body, knees overlap. Skin of upper parts 

 smooth; glandular ridge from posterior corner of eye passing above 

 tympanum and ending on the shoulder; venter smooth except for a 

 few pustules around anus. No distinct ventral disk; in the male a 

 few folds on each side of throat indicate the presence of a pair of 

 external lateral vocal sacs. 



Dimensions. — Head and body 21 mm.; head length 7.5 mm., width 

 7.5 mm.; femur 11 mm.; tibia 12 mm.; foot 11 mm.; hand 6.5 nun. 



Color in alcohol. — Dorsum russet, with a few large, squarish, darker 

 russet spots between shoulders and on sacrum; three dark cinnamon 

 crossbars on upper leg sm-faces, and two similar bars across forearm 

 and ^vrist; sides paler; venter pale oUve-bufF with small russet spots 

 scattered on throat and belly; a wide dark stripe along canthus, and a 

 triangular dark spot below eye. 



Variations. — As only a few adult specimens of petropolitanus are at 

 hand, its true range of variation cannot yet be estimated. Four very 

 young ones were taken on wet rocks at Independencia, Petr<5polis. 

 The one which still has a tail is 9 mm. in head and body length, with 



