EHACOPHOKUS. 2-49 



the nasal and frontoparietal bones ; snout obtusely pointed, about 

 as long as the orbit ; canthus rostralis distinct ; loreal region con- 

 cave ; nostril much nearer end of snout than eye; interorbital 

 space broader than the upper eyelid; tympanum Aery distinct, 

 I to I the diameter of the eye. Fingers with a slight rudiment of 

 web ; toes 5 webbed ; disks moderate, smaller than the tympanum; 

 subarticular tubercles moderate ; a small inner metatarsal articu- 

 lation. 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 eye to shoulder. 

 Colour very changeable, even in the same individual ; upper parts 

 gre}', yellow, brown, reddish, or greenish, spotted or mottled with 

 brown or black, or with four dark longitudinal bands on the head 

 and body ; limbs with dark cross-bars ; hinder side of thighs 

 uniform or light-spotted ; lower parts white or buff. Male with 

 internal vocal sacs. 



Prom snout to vent 75 millim. 



Tadpole with the eyes lateral, sinistral spiraculum and dextral 

 anus. Mouth with a large circular lip, bordered with papilla on 

 the sides and beneath, the upper part with 4 or 5 series of fine 

 horny teeth, the uppermost uninterrupted, the others interrupted, 

 the lower part with 3 long series uninterrupted or the third 

 narrowly interrupted ; beak black. Tail very acutely pointed, 

 the upper crest not extending on the back. Total length up to 

 46 millim. 



Southern China, Sikkim, and Assam to Malay Peninsula and 

 Archipelago. Generally distributed and common in the Malay 

 Peninsula, up to 5000 feet, as well as at sea-level. 



Capt. Plower observes that this frog apparently breeds at 

 various times of the year, as specimens are frequently to be seen 

 in the evening in embrace on the edges of rain-water butts of 

 houses, from March to October. The spawn floats on the surface 

 of the water, enclosed in an envelope resembling white foam. 

 Mr. Laidlaw observed the breeding in August and September. 

 The eggs were laid in a frothy mass on the leaves of trees over- 

 hanging small pools of water : after a short time they slid off the 

 leaves and fell into the water, where the frothy envelope dis- 

 solved away, setting free the tadpoles. Mr. Butler observes that 

 about houses, tubs of rain-water are commonly used as breeding- 

 places. 



265. Rhacophorus robinsonii. 



Bouleng. Fascic. Malay., Zool. i, p. 136, pi. v, fig. 2 (1903), aud 

 Journ. Fed. Malay States Mus. iii, p. 63 (1908). 



Vomerine teeth in two long oblique series touching the inner 

 front edges of the choanse. Snout obtusely pointed, as long as 

 the orbit, with straight canthus rostralis and nearly vertical, 



