58 U. S. NATIONAL MUSEUM BULLETIN 2 06 



between nostrils. Tympanum very distinct, about four-fifths diame- 

 ter of eye, separated from eye by an interval equal to one-half its own 

 diameter. Fingers one-third webbed, fourth much longer than second, 

 reaching to base of disk of third which covers the entire tympanic 

 area; no pronounced pollex; toes three-fourths webbed, third and 

 fifth subequal, disk of fourth covering about four-fifths of the tympanic 

 area; an oval inner metatarsal tubercle and an extremely small, wart- 

 like outer one; a narrow well-marked glandular line on inner side of 

 tarsus; no outer tarsal ridge; no dermal appendage on heel; body 

 rather elongate and only moderately heavy in build; in postaxillary 

 region about equal to greatest width of head; when hind leg is ad- 

 pressed, heel reaches to center of eye; when limbs are laid along the 

 sides, knee and elbow slightly overlap; when hind legs are bent at 

 right angles to body, heels considerably overlap. Skin of upper parts 

 thick, beset with small spiny tubercles (in the male) which appear 

 even on the upper lip and on the exposed limb surfaces; skin of throat 

 slightly granular, that of chest smooth, that of belly and posterior 

 lower femur coarsely granular. A slight skinfold across the chest. 

 A pair of very prominent lateral external vocal sacs ending behind the 

 tympanum ; a heavy black corneous pad on base of first finger. 



Dimensions. — Head and body 53 mm.; head length 16 mm., width 

 16 mm.; femur 24 mm.; tibia 26 mm.; foot 23 mm.; hand 17 mm.. 



Color in alcohol. — Ground color drab gray; a large drab parallelo- 

 gram edged with slate color extending from the anterior corner of each 

 eyelid back to the sacrum; below its straight lateral borders a pale drab- 

 gray lateral stripe extending from the posterior corner of the eye; 

 sides below this light stripe suffused with drab ; f emiu* drab above but 

 without definite markings; tibia with v/ide drab sepia-edged crossbars 

 separated by a pale drab narrow stripe; forearm with faint traces of 

 similar markings; ventral surface olive-buff on throat and belly, 

 buft* on legs, immaculate. Anterior part of head in front of eyes pale 

 immaculate drab gray, including upper lip. 



Color in life. — In the original description Miranda-Ribeiro (1926, 

 p. 77) gives the very adequate notes translated here: ''The color 

 imitates that of H. quadrangulum, having in life an olive green or 

 sepia ground, more yellowish on the abdominal surface. A large 

 quadrilateral goes from eye to sacrum; its corners are rounded and it 

 is delineated by a black line, externally bordered by another white 

 one; in the middle of the space thus limited, the color of which is 

 sepia, larger black spots and other smaller white ones; a transverse 

 sepia border on the forearm margined with black and white; others 

 on the femur, neither always present, and one or tv/o on the leg. 

 This is the coloration of the male; the female has one or two ocelli 



