1920.] G. A. Bour.KxGER : Frogs of the Genus Rana. 195 



106. Rana whiteheadi. 



/?ana whiteheadi, Bouleng. Ann. and Mag. N.H. (^s) XX, 1887, p. 96; 

 IMocquard, A^. Arch. Mus. (3I II, 1890, p. 146, pi. x, fig. 2 ; Bouleng. 

 Ann. and Mag. N.H. (6) VII, 1891, p. 344 ; Mocquard, Mem. Snc. 

 Zool. France, V, 1892, p. 205 ; Bouleng. Proc. Zool. Soc. 1893, p. 526. 



Vomerine teeth in short transverse or oblique series on a line 

 with the posterior Ijorders of the choanae, or just behind them, 

 equally distant from each other and from the latter, or closer 

 together. 



Head as long as broad or slightly longer than broad, much 

 depressed ; snout rounded or obtusely pointed, feebly projecting 

 beyond the mouth, as long as or a little longer or a little shorter 

 than the eye, which is very large and prominent ; canthus rostralis 

 strong ; loreal region feebly oblique, deeply concave ; nostril nearer 

 the tip of the snout than the eye ; distance between the nostrils 

 equal to or a little greater than the interorbital width, which 

 equals f to once that of the upper eyelid ; tympanum very dis- 

 tinct, f to a the diameter of the eye, i to 2J times as long as its 

 distance from the latter. 



Fingers rather long and slender, the tips dilated into moder- 

 ately large discs with a groove separating the upper from the lower 

 surface, the discs as long as broad and measuring | to * the 

 diameter of the tympanum ; first finger as long as or longer than 

 the second, third longer than the snout; subarticular tubercles 

 rather large, very prominent. 



Hind limb very long and slender, the tibio-tarsal articulation 

 reaching far bej'ond the tip of the snout, the heels strongly over- 

 lapping when the limbs are folded at right angles to the body ; 

 tibia 6 to 7 times as long as broad, ij to i^ times in length from 

 snout to vent, as long as or a little longer or a little shorter than 

 the fore limb, much longer than the foot. Toes with the tips 

 dilated into discs similar to those of the fingers, comi^letely webbed, 

 or two phalanges of fourth free ; outer metatarsals separated nearh' 

 to the base; subarticular tubercles moderately large, very prom- 

 inent; no tarsal fold; inner metatarsal tubercle oval or elliptic, 

 :^ to J the length of the inner toe ; outer tubercle very small and 

 rather indistinct, or absent. 



Skin finely granulate or shagreened above ; a moderately prom- 

 inent glandular fold above the tympanum, sometimes continued 

 to about half-way between it and the second or followed by a series 

 of warts. I^ower parts smooth, or posterior part of belh' and 

 posterior half of thighs feebly granulate. 



Dark grey, purphsh brown, or reddish brown above, some- 

 times with darker spots or marblings, or with scattered small light 

 spots ; a blackish streak below the canthus rostralis and on the 

 supratemporal fold ; temporal region blackish or with blackish 

 spots, the tympanum yellowish or pale brown with a dark brown 

 or blackish central spot ; limbs with or without more or less dis- 

 tinct dark cross-bands; hinder side of thighs purpHsh brown,- 



