1920.] G, A. BouLKNGER : Frogs of the Genus Rana. 43 



Yellowish-red to chocolate red, brownish olive, or dark olive, 

 with or without small darker spots ; a dark chevron or a yellow- 

 ish, dark-edged band sometimes present between the eyes, in 

 3^oung specimens ; temporal fold dark-edged ; a large black tem- 

 poral spot in some young ; lips usuall5^ with dark spots or vertical 

 bars ; two of these bars, from the eye to the mouth, usually very 

 distinct in the young ; sides sometimes speckled with blackish ; 

 limbs with or without more or less distinct dark bars ; hinder 

 sides of thighs speckled, spotted or marbled with black ; a yellow 

 or orange vertebral streak or fine line sometimes present ; rarely a 

 fine 3^ellow line along the thigh and the inner side of the calf. 

 Throat white or brown, belly and lower surface of limbs yellow 

 or pale orange, uniform or spotted or speckled with brown. 



Males without vocal sacs ; the fore limbs neither thickened nor 

 bearing nuptial excrescences; difi"ering from fen- ales by the larger 

 head and the tooth-like prominences in front of the lower jaw. 



Nasals large, in contact with each other and with the fronto- 

 parietals, which may be fused behind and bear a strong sagittal 

 crest in the adult, the crest bifurcate at the occipital extremity ; 

 ethmoid covered over ; zygomatic branch of squamosal very long, 

 reaching the eye. Omosternal style forked at the base. Terminal 

 phalanges slightly expanded at the end. 



Tadpole wdth the tail twice or more than twice as long as the 

 body, acutely pointed or ending in a filament, the dorsal crest not 

 extending to the base of the tail. Beak broadly edged with black ; 

 a long marginal series of upper' labial teeth and a short series on 

 each side ; 3 series of lower labial teeth, outer short and un- 

 interrupted, second long and uninterrupted, third interrupted in the 

 middle. Light reddish-brown ; a dark brown line through the eyes, 

 sometimes other darker hues radiating from the eye ; tail with 

 irregular dark brown vertical bars. 



[The tadpole lives in jungle streams in places where the bottom 

 is sandy. The dark irregular bars on the tail aid greatly in con- 

 cealing it in such places. — N.A.]. 



Eggs measuring 2 millim. in a female 135 millim. from snout 

 to vent. 



A specimen from Singapore, preserved in the Raffles Museum, 

 measures 250 millim. from snout to vent, according to A. L. Butler, 

 thus very nearly of the size of the African R. goliath, Blgr. 



Habitat. Singapore, Natunas, Engano, Borneo, Java, Lom- 

 bok, Flores, Halmaheira, Batjan. 



Var. biythii. 



Head narrower than usual in the typical form, often as long 

 as broad or a little broader than long, rarely slightly longer than 

 broad ; eye usually larger, canthus rostralis more distinct, and 

 loreal region less oblique ; tympanum often smaller, | to | the 

 diameter of the eye, j to once its distance from the latter, fibio- 

 tarsal articulation sometimes reaching the tip of the snout ; tibia 



