68 U. S. NATIONAL MUSEUM BULLETIN 206 



above the anus ; skin of throat and chest finely gi-anular, that of belly 

 and lower part of femur heavily granular, with two lines of heavy 

 round glandules below the anus and another line of coarse glandules 

 along the back of the femur halfway to knee ; a heavy skinfold across 

 the chest. (A median vocal sac in the male.) 



Dimensions. — Head and body 65 mm.; head length 21 mm., width 

 23 mm.; femur 34 mm.; tibia 36 mm.; foot 25 mm.; hand 19 mm. 



Color in alcohol. — Dorsal ground color wood brown with an indistinct, 

 darker Y-shaped drab marking on the back, the anterior prolongations 

 going to the eyelids, the posterior part widening and gradually merging 

 with the ground color on the sacrum; a few small sepia spots irregularly 

 scattered on the back ; upper part of femur with three or four indistinct 

 wide drab bars which break up on the pale posterior surface of the 

 femur into more than a dozen narrow wavy russet lines; anterior 

 surface of femur without definite markings, slightly suffused with 

 pale brown or drab; arm, tibia, and foot with wide, indistinct, drab-to- 

 sepia crossbars containing many fine sepia spots and some larger 

 coarse ones; a sepia patch on each heel below the pale glandular 

 ridge, and a similar one on the anal region ; upper and lower lip wood 

 brown with irregular drab spots; chin suffused with drab; chest, belly 

 and lower part of limbs immaculate cream color; sides with a few wavy 

 sepia lines like those behind the femur, appearing to terminate the 

 drab dorsal markings. 



Variations. —In a fine series of eight adults, USNM 80676-83, from 

 Puerto Ayacucho, Amazonas, Venezuela, the vomerine teeth are 

 usually rather short, heavy, more or less slanting patches extending 

 from the middle of the choanae past their posterior level, but one 

 individual, 80677, has them in narrow, elongate / \-shaped patches 

 which begin between the anterior level of the choanae. The heel 

 adpressed reaches to between the anterior corner of the eye and beyond 

 the tip of the snout. The tympanum in this series varies from one-half 

 to three-fourths the width of the eye. The dorsal Y-shaped mark is 

 present in all these specimens, although greatly obscured in some by 

 the dark dorsal coloration. On the lightest specimen the drab dorsal 

 pattern becomes a coarse network on top of head and snout, as well 

 as on sides of body. The narrow dark lateral lines, as well as the 

 postfemoral lines, appear to be constantly present, although these 

 latter may be many or few in number. Two of these eight frogs have 

 a dark narrow median dorsal line from tip of snout to center of back. 



An example measuring 43 mm. from the Serra de Maca6, 

 USNM 102550, may be the young of this species, although its nose, 

 seen in profile, slants forward instead of being bluntly truncate, as is 

 true of a young Bahia specimen of 40 mm. (MP 469). The vomerine 

 teeth in both these young frogs are less extended posterolaterally 



