FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 357 



crossing the tarsus and ending at the heel on the outer side of foot, 

 the central part of this ridge curving and almost shovellike; no 

 speciaHzed inguinal gland. Body rather slender, in postaxillary 

 region a little narrower than head; when hind legs are adpressed, heel 

 reaches to nostril ; when limbs are laid along the sides, knee and elbow 

 overlap; when hind limbs are bent at right angles to body, heels 

 greatly overlap. Skin of upper parts glandular, with many short 

 glandular ridges on the back; the most prominent of these is a pair 

 going diagonally backwards from each eyelid towards center of back; 

 no decided skinfold or ridge above tympanum; venter smooth except 

 for granulations below anus and on posterior femur. A ventral disk 

 from chest to posterior part of belly. Apparently no external vocal 

 sac in the male. 



Dimensions. — Head and body 13.5 mm.; head length 5 mm. (to angle 

 of mouth), width 4.5 mm.; femur 6 mm.; tibia 7 mm.; foot 8 mm.; 

 hand 3.5 mm. 



Color in alcohol. — Dorsum drab; a wide V-shaped brown spot 

 between the eyes; upper parts of legs with one or two widely spaced 

 crossbars. Posterior femur with a light yellowish stripe bordered 

 by dusky brown, the brown border very narrow ventrally ; some white 

 spots below the anus marking the positions of glands. Venter clay 

 color, immaculate except for some pale brown marblings around edge 

 of lower lip. 



Variations. — In most specimens from Minas Gerais the throat and 

 breast are uniformly pale like the bell}^, except for a row of small 

 brown dots sometimes present along the borders of the lower lip. 

 Very rarely there may be a transverse u-regular row of light gray dots 

 across the throat. The six specimens from Sao Paulo have the throat, 

 chest, and belly uniformly pale also. Some specimens have a narrow 

 white middorsal line; most of them, however, have only dark )(- 

 or X-shaped markings between the shoulders following the usual 

 transocular crossbar, and a /\- or n-shaped dark sacral mark. The 

 snout is rounded and the nostrils are usually about midwa}^ between 

 the eye and tip of snout, although occasionally a little closer to the 

 latter. 



A large female, USNM 97016, measures 18 mm. in total length; the 

 males seldom exceed 15.5 mm. 



Remarks. — The fact that scars of Cercaria are frequently found on 

 this as well as on other partly aquatic species makes it difficult at first 

 glance to ascertain the real character of the tubercle under the forearm. 

 By looking at a scrie^s of frogs, however, it is possible to recognize the 

 differences betv/een a tubercle and a scar. A second tubercle, near 

 the elbow, is usually a little less distinct than the one near the wrist, 

 although sometimes both are practically indistinguishable. 



