1920.] G. A. BouLENGER : Frogs of the Genus Rana. 203 



ately or feebly prominent glandular dorso-lateral fold from above 

 the tympanum to the sacrum^ or if to the hip, often broken up 

 behind, its distance from its fellow, on the back, 5 to 6 times in 

 length from snout to vent ; a glandular fold from below the eye to 

 the shoulder, followed by one or two glandules. Posterior half 

 of thighs and usually of belly granulate. 



Bright green or bronze-brown above (brown or purple in 

 spirit), sides dark green or dark brown, with rather indistinct darker 

 spots ; back sometimes with small dark spots ; tympanum often 

 reddish brown ; a white or golden streak on the upper lip ; limbs 

 with more or less distinct dark cross-bands. Whitish beneath, 

 throat and breast often spotted or marbled with brown. 



Males with internal vocal sacs ; fore limb strong. 



Nasal bones moderately large, separated from each other and 

 from the frontoparietals ; ethmoid largely exposed above, pointed 

 in front, extending to between the nasals. 



Tadpole with the tail pointed, about twice as long as the 

 body. Beak broadly edged with black ; upper lip with 4 series of 

 horny teeth, the outermost marginal and uninterrupted, the others 

 interrupted ; lower Hp with 3 series of horny teeth, all or onl}^ the 

 two outer uninterrupted. 



Eggs measuring ij millim. in female 58 millim. long from 

 snout to vent.' 



Habitat. Malay Peninsula, Sumatra, Mantawei Islands, Bor- 

 neo, Java, Celebes, Philippines. 



I now regard R. lahialis, from the Mala}' Peninsula, as a 

 variety of the typical R. chalconota from Java, from which it differs 

 in the usually shorter foot as compared with the tibia, the rather 

 more slender hind limbs, and the smaller size ; but intermediate 

 specimens completely connect the two extreme forms. 



no. Rana macrops. 



Ra)ia macrops, Bouleng. Proc. Zool. Soc. 1897, p. 233, pi. xvi, fig. i. 



Vomerine teeth in very small oblique groups between the 

 choanae, or close together just behind them. 



Head as long as broad, much depressed ; snout rounded, pro- 

 jecting beyond the mouth, shorter than the eye, which is very 

 large ; canthus rostralis strong ; loreal region nearlj^ vertical, con- 

 cave ; nostril a little nearer the tip of the snout than the eye ; 

 distance between the nostrils equal to the interorbital space or 

 the width of the upper eyelid ; tympanum very distinct, ^ the 

 diameter of the eye, i-| to 2 times its distance from the latter. 



Fingers long and slender, the tips dilated into rather large 

 discs, with a groove separating the upper from the lower surface, 

 and measuring f to | the diameter of the tympanum ; first finger 

 as long as the second, third much longer than the snout ; subarticu- 

 lar tubercles moderately large, prominent. 



i The Drs. Sarasin have observed this frog in Celebes to lay its eggs in a 

 frothy mass out of the water, forming a sort of nest as in some Rliacophonis. 



