302 XJ. S. NATIONAL MUSEUM BULLETIN 206 



Leptodactylus gaigeae Cocliran 



Plate 26, Figures e-g 



1938. Leptodactylus gaigeae Cochran, p. 41 (type locality, Bonito, Serra da 

 Bocaina, Rio de Janeiro-Sao Paulo boundary). 



Description. — Adult male, USNM 96759 (type), Bonito, Serra da 

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

 well-separated patches behind the choanae and between their inner 

 borders; maxillary teeth well developed; tongue one-half as wide as 

 mouth-opening, oval, not indented on its free posterior border; a 

 single, small toothUke process in front of lower jaw; snout nearly semi- 

 circular in outline when seen from above, slanting forward in profile, 

 the upper jaw not extending beyond lower; nostrils superior, about 

 halfway between eye and tip of snout, separated from each other by an 

 interval equal to their distance from eye. Canthus rostralis scarcely 

 evident, the loreal region sloping broadly outward to the upper lip, so 

 that the snout appears nearly flat. Eye moderate in size, its diameter 

 two-thirds its distance from end of snout; interorbital diameter greater 

 than distance between nostrils, twice the width of the weak upper eye- 

 Ud, which is scarcely differentiated from the upper head region. 

 Tympanum very indistinct, quite small, only the lower rim slightly 

 projecting, its width about one-third the eye diameter, separated from 

 eye by an interval equaling nearly twice its own diameter. Fingers 

 free, apparently with very slight lateral ridges, their tips not dilated, 

 first and second subequal, shorter than fourth, third quite long; sub- 

 articular and metacarpal tubercles moderate; no rudiment of a pollex; 

 toes free, their tips not dilated, with distinct lateral ridges, third much 

 longer than fifth and reaching to base of antepenultimate phalanx of 

 foiu-th; a small oval inner and a minute round outer metatarsal tu- 

 bercle; subarticular tubercles moderate; a weak tarsal ridge. Body 

 moderately slender, in postaxillary region equal to greatest width of 

 head; when hind leg is adpressed, heel reaches only to front of shoulder; 

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

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

 Skin of upper parts smooth; a very distinct glandular lateral ridge from 

 posterior corner of eye passing straight backwards at first and then 

 bending on the sides and disappearing before reaching the groin; a 

 very weak \/-shaped glandular fold behind the head; a small round 

 tubercle on the edge of the upper eyelid; ventral surface smooth 

 (highly glandular under microscope) except under part of femur, which 

 has some weak granules. No ventral disk; a few weak throat folds 

 indicating a small external vocal sac. 



Dimensions. — Head and body 19 mm.; head length 6 mm., width 

 6.5 mm.; femur 7 mm.; tibia 7 mm.; foot 8 mm.; hand 4 mm. 



