EHACOPHOEUS. 475 



Polypedates leucomvstax, Tschudi, Class. Batr. p. 75 ; Cantor, J. A. 



8. B. xvi, 1847, p. 10G.3. 

 Polypeda,tes rugosus, Dum. 8^ Bibr. Erp. Gen. viii, p. 520. 

 Polypedates macidatus, part., and P. quacb'ilineatus, Giinth. Cat. 



Batr. Sal. pp. 78, 79 ; id. Eept. B. I. i)p. 428, 429. 

 Eliacophorus maculatiis, part., Boidenff. Cat. Batr. Sal. p. 83. 

 Ehacoplionis leucomystax, Bouleng. P. Z. S. 1889, p. 29. 



All the specimens from the Eastern Himalayas and the countries 

 east of the Eay of Bengal differ from the Indiaii and Ceylouese 

 (7?. macidatus and crucvjer) in the absence of a parieto-squamosal 

 arch. Except in the Himalayan and some South Chinese examples, 

 all liave, when adult, a rugose skull with more or less developed 

 postorbital processes to the frontoparietal bones, and the skin 

 adheres to the latter and to the nasals. It is therefore considered 

 advisable to regard them as belonging to a species distiuct from, 

 though very closely allied to, li. maculatiis. The coloration varies 

 exceedingly, and the hinder side of the thighs may be uniform or 

 light-spotted. A \ariety {sexvinjata s. quadrilineata) is character- 

 ized by regular dark bands along the head and back. 



Erom snout to vent 3*2 inches. 



Hah. Erom the Eastern Himalayas (8ikhim), Assam, Burma, and 

 Southern China, to the Malay Peninsula and Archipelago. 



(il. Rhacophorus maculatiis. 



Hyla maculata, Gray, III. Lid. Zuol. i, pi. Ixxxii, tig. 1. 

 Polypedates leucomystax, iJuin. ^- Bihr. Erp. Gen. viii, p. -J 19. 

 Polypedates leucomystax, part., Kelaart, Prodr. p. lOo. 

 Polypedates maculatus, part., Giinth. Cat. Batr. Sal. p. 78 ; id. Rept. 



B. I. p. 428. 

 Polypedates biscutiger, Peters, MB. Ak. Berl. 1871, p. 649. 

 lihaeophorus macidatus, part., Bouleng. Cat. Batr. Sal. p. 83. 

 lUiacophorus maculatus, Boiilcn;/. P. Z. S. 1889, p. 30. 



Vomerine teeth in t\\ o more or less oblique series between the 

 choana3 or commencing close to the inner front edge of the latter. 

 Skin of head free ; a more or less developed bony arch, sometimes 

 slender and partly ligamentous, sometimes very thick and s\^•ollen, 

 extending on each side from the posterior border of the fronto- 

 parietal bones to the squamosals ; snout obtusely acuminate, about 

 as long as the diameter of the orbit : canthus rostralis distinct ; 

 loreal region concave ; nostril much nearer to tlie end of the snout 

 than to the eye ; interorbital space broader than the upper eyelid ; 

 tympanum about three fourths the diameter of the eye. Eingers 

 with a slight rudiment of web ; toes two-thirds webbed ; disks 

 moderate, that of the third finger measuring two fifths to one half 

 the diameter of the eye ; subarticular tubercles moderate. The 

 tibio-tarsal articulation reaches the eye, or between the eye and the 

 tip of the snout. Skin smooth above, granulate on the belly and 

 under the thighs ; a fold from the eye to the shoulder. Brownish, 

 yellowish, greyish, or whitish above, with darker spots or markings ; 



