158 BULLETIN 58, UNITED STATES NATIONAL MUSEUM. 



rows between the choanse, contiguous with the latter and separated 

 from each other by a space as wide as the choanae; nostrils nearer 

 tip of snout than eyes; upper eyelids only two-thirds the interorbital 

 space; diameter of tympanum about three-fourths that of the eye; 

 fingers with barely a rudiment of web; first finger shorter than 

 second by half the diameter of the disk, which is more than half that 

 of the tympanum; toes about half webbed, inner metatarsal tubercle 

 much smaller than digital disks; no outer tubercle; tibio-tarsal 

 joint extends beyond the tip of the snout; skin nearly smooth above 

 and on throat and chest, strongly granular on belly and underside 

 of thighs; a sharp, narrow fold from posterior corner of eye in a 

 straight line over tympanum, ending rather abruptly some distance 

 past the insertion oiF the fore limb. Color (in alcohol), pale brownish 

 gray above, with four obscure longitudinal brownish bands, the 

 lateral ones broader and originating on the anterior portion of the 

 upper eyelids, the median ones narrower, originating on the snout 

 and apparently confluent on the sacrum; a narrow blackish line 

 runs from the tip of snout through the nostrils, middle of eyes, and 

 over the tympanum just underneath the postocular fold; on the flanks 

 a few distinct blackish reticulations; edge of jaws whitish, accentuated 

 by a very narrow line of dark brownish. 



Dimensions. 



mm. 



Total length, tip of snout to vent 58 



Snout to eye 11 



Snout to posterior boixler of tympanum 22 



Nostril to eye 8 



Diameter of eye 7 



Diameter of tympanum 5 



Interorbital width : 7 



Fore leg -. - 36 



Tibia * 32 



Digital disks 2. 75 



Habitat . — Polypedates leucomystax is said to inhabit ''Southern 

 China and Eastern Himalayas to the Malay peninsula and archi- 

 pelago." The striped form, supposed to be only a color variety,'' 

 has been found in Java, Sumatra, Singapore, the Philippines, and in 

 Formosa, a specimen from the latter island, collected by Mr. Matthew 

 Dickson, being in the British Museum. 



«Mr. S. S. Flower, who studied Polypedates leucomystax alive in the Malay penin- 

 sula, says that the striped specimens do not represent "even a true variety, as the 

 dark lines appear conspicuously and disappear entirely in' the same individual. If 

 killed with or without the lines visible they remain so in spirit. In Singapore at 

 different times I noticed many young frogs which had just left the water, all of which 

 had the dark lines visible; these disappear as the animal grows, only to reappear 

 temporarily in the adult." (Proc. Zool. Soc. London, 1896, p, 906.) 



