267 



Rhacophonts nigropalmatus Boulenger, Fasciculi Malayenses, Zool., pt. I, 1903, 



p. 137, pi. VI, fig. 1. 

 Rhacophorus nigropalmatus Isenschmid, Mitth. naturf. Ges. Bern, 1903, p. 73, 85, 



pi. II (skeleton), VI (embryons). 

 Rhacophorus nigropalmatus Boulenger, Vert. Fauna Malay Penins., Rept. and 



Batr., London, 1912, p. 251, fig. 71. 



Vomerine teeth in two long, straight or slightly curved 

 transverse series between the front edges of the choanae. 

 Head a little broader than long ; snout rounded, as long as 

 the upper eyelid, longer than deep; canthus rostralis obtuse, 

 curved; loireal region oblique, concave; nostril nearer to the tip 

 of the snout than to the eye ; interorbital space broader than 

 the upper eyelid; tympanum distinct, ! /a to Va t ^ le diameter 

 of the eye. Fingers and toes with large disks, those of the 

 three outer fingers as large as or smaller than the tympanum, 

 disks of toes and first finger a little smaller than those of 

 outer fingers ; first finger shorter than second, which is shorter 

 than fourth; all the fingers webbed to the disks; third and 

 fifth toe equal in length; toes webbed to the disks; subarti- 

 cular tubercles distinct; a small, pointed inner, no outer meta- 

 tarsal tubercle; the heel reaches the nostril, the tip of the 

 snout, or beyond ; tibia about half length of head and body. 



Smooth or finely granulate above; belly, sides of body and 

 lower surface of thighs coarsely granulate; a strong dermal 

 fold along the outer edge of the fore-arm and another at the 

 heel; less developed folds along outer edges of fourth finger, 

 tarsus and fifth toe; a triangular fold along the inner side of 

 the arm and a small flap above the vent. 



In life green above, usually powdered with white, or with 

 lichen-like white markings ; one or two conspicuous white 

 spots on the upper surface of the thigh; flanks yellow or 

 orange, veined with black; interdigital membranes black at 

 the base, towards the border yellow or orange, veined with 

 black; throat and chest cream-colour, belly and lower surface 

 of limbs salmon-pink, sometimes dotted with yellow. Length 

 105 mm. 



The spawn is deposited on the earth in masses of mucilage, 

 each containing about 20 to 30 eggs, which are rich of yolk. 



Habitat: Sumatra (Laut Tador; Tandjungkasau ; Muaro- 

 labu!; Benakat, Palembang!); Borneo (Akar riv.; Bidi). — 

 Siam; Malay Peninsula. 



