156 BULLETIN 58, UNITED STATES NATIONAL MUSEUM. 



close to the inner border of the choanse; nostril nearer the tip of 

 snout than the eye; interorbital space narrower than upper eyelid; 

 horizontal diameter of tympanum less than one-half the diameter of 

 the eye; fingers free, first much shorter than second; disks of third 

 fingers largest, less than half the diameter of tympanum; webs of toes 

 excised to distal end of first phalanx of fourth toe; subarticular 

 tubercles not very prominent; inner metatarsal tubercle small, oval; 

 no outer tubercle; tibio-tarsal articulations reach beyond the tip of 

 the snout more than half the width of the head when hind legs are 

 extended forward along the body, and when bent at right angles to 

 the axis of the body the same joints overlap more than the width of 

 the interorbital space; skin above smooth with scattered tubercles, 

 which are more numerous on the sides, and various very narrow and 

 not conspicuous longitudinal folds which anastomose more or less 

 and form two shallow crescents on the shoulders, with the convexity 

 toward the median line; throat and chest smooth; rest of underside 

 of body, as well as posterior aspect of the femur near the base, coarsely 

 granular; a fold from posterior border of eye over tympanum to 

 above insertion of fore leg. Color (in alcohol), above pale drab with 

 brown markings; a chevron mark on top of head across the middle of 

 upper eyelids with the angle pointing backward ; on the shoulders two 

 angular marks corresponding to the glandular folds, a dark vertical 

 band from front of eye to edge of lip, and a longitudinal one from eye 

 over upper part of tympanum to shoulder along the lower edge of the 

 glandular fold; legs and feet cross-barred; lower lip with some dark 

 brown spots; a dark brown longitudinal line in front of upper part 

 of overarm; underside otherwise white. 



Dimensions. 



mm. 



Total length, tip of snout to vent 33 



Width of head 11 



Fore leg 19 



Hind leg, vent to tip of longest toe 62 



Tibia 21 



The adult male is smaller; U.S.N.M. No. 7313 d, same locality, date, 

 and collector, measures only 26 mm.; a copulatory pad of minute 

 asperities forms a swelling on top and side of the metacarpal of first 

 finger; there is apparently an internal vocal sac with openings on both 

 sides of the mouth back of the tongue. 



Variation. — In structure and proportions there is very little varia- 

 tion observable. The coloration is also on the whole very uniform, 

 though the extent and intensity of the dark markings vary some- 

 what; thus there is often a dark line connecting the angles of the 

 scapular marks, and in some there is an elongated lozenge-shajx'd 

 mark on the lower back. 



