248 EANID.I. 



uppei' eyelid ; tympanum very distinct, | the diameter of the eye. 

 .Fingers free, toes nearly entirely webbed ; dislvs not more than 

 half the size of the tympanum ; snbarticular tubercles well deve- 

 loped ; a very small inner metatarsal tubercle. The tibio-tarsal 

 articulation reaches bet^^■een the eye and the tip of tlie snout. 

 Upper parts covered with large warts and tubercles of different 

 sizes bearing granular asperities ; lower parts, except the limbs, 

 granular. Colour in life rich warm chocolate-brown above, the 

 top of the M arts paler, some of those on the back yellow ; jet-black 

 beneath, mai'bled with pale bluish grey; under surface of lingers 

 and toes, interdigital web, and disks bright rose-red. Iris pal© 

 warm brown, pencilled radially with black, with a fine yellowish- 

 orange line bordering the pupil. Male without vocal sac. 



From snout to vent 65 millim. 



Larut Hills, Perak, 4000 feet ; Gunong Angsi, Negri Sembilan, 

 2600 feet ; and Sumatra. 



Mr. L. Wray, who discovered this remarkable frog in the Malay 

 Peninsula, remarks as follows : — 



" The colour and rugose character of the skin of this frog is 

 evidently a means of protecting it from birds and other enemies, 

 the whole upper surface being such a close copy of the back of a 

 tree that it is very hard to detect one wdien resting u])on it. This 

 species also lives in holes in trees, and the note produced by it is 

 not so loud as that of PhripieUa, and has a more metallic ring in 

 it." 



Six or eight specimens were obtained by Mr. AVray at the same 

 spot twenty-five years ago, but the frog has since been found ou 

 only one occasion on Gunong Angsi, Negri Sembilan, as recorded 

 by Mr. Robinson. 



264. Rhacophorus leucomystax. 



Hyla leucomystax, (xravenh. Delic. Mii3. V^ratisl. p. 26 (1829). 



Hylii se.vviryafa, Graveiili. op. cit. p. 28. 



Hyla qiiadnlineata, Wieom. N. Acta Ac. Leop. -Carol, xvii, i, 



'p. 260, pi. xxii, tig. 1 (1835). 

 Tolypedates leucomystax, Cantor, Journ. Asiat. See. Bengal, xvi, 



p. 1063 (1847). 

 Polypedates maculattts, part., Giinth. liept. Brit. Ind. p. 428 (1864). 

 Po/ypedates quadrilineatus, Giinth. op. cit. p. 429. 

 Rhacophorus maculatus, part., Bouleng. Cat. Batr. Ecaud. p. 83 



(1882). 

 Phaco/tJiorus leticomysta.r, Bouleng. Faun. Brit. Ind., IJept. p. 474 



(1890) ; S. Flower, P. Z. S. 1896, p. 905, pi. xliv, tig. 2, and 



1899, p. 898, pi. lix, tig. 3 ; Laidlaw, P. Z. S. 1900, p. 887; A. L. 



Butler, Journ. Nat. Hist. Soc. Bombay, xv, p. 202 (1903). 



Vomerine teeth in two more or less oblique series between the 

 choana), or commencing close to the inner front edges of the latter. 

 Upper surface of head rugose in the adult, the skin adhering to 



