246 



large, a little broader than long; snout pointed, a little longer 

 than the orbit ; canthus rostralis sharp ; loreal region deeply 

 concave; nostril close to the tip of the snout; interorbital 

 space a little broader than the upper eyelid ; tympanum nearly 

 as large as the eye. Disks of fingers rather large, of toes 

 smaller; fingers with a rudimentary web; toes 2 / 3 webbed; the 

 heel reaches between the eye and the nostril. 



Skin adherent to the rugose frontoparietals; a strong spinose 

 bony crest above the tympanum; a spine at the angles of 

 the jaws; back finely, belly and lower surface of thighs coarsely 

 granulate; heel, and sometimes the elbow, with a small triang- 

 ular dermal appendage. 



Pale olive above, with dark grey spots and longitudinal 

 streaks; hind limbs with dark cross-bars. Length 80 mm. 



Male with internal vocal sacs. 



Tadpole. — Length of body 1 '/ 2 to i 2 / 3 times its width, 

 3 / 3 to 4 / 5 the length of the tail, which is 2'/ 3 to 3 times as 

 long as deep, the depth of the muscular portion being about 

 3 / 5 of the total depth. Nostril nearer to the end of the snout than 

 to the eye; eyes lateral, equally distant from the spiraculum and 

 the end of the snout or a little nearer to the former, the distance 

 between them 2'/ 2 to 3 times that between the nostrils, and 

 2'/ 4 to 2'/ 3 times the width of the mouth ; spiraculum sinistral, 

 directed upwards and backwards, equidistant from the end of 

 the snout and the vent; vent dextral, above the lower edge 

 of the tail. Tail acutely pointed. 



Lower border of lips with papillae; jaws black; series of 

 teeth 3 '3/3. Length 80 mm. 



Habitat: Sumatra (district Palembang!); Borneo (Bongon, 

 N. -Borneo; Baram; Serawak). 



3. Rhacophorus leucomystax (Kuhl). 



Hyla leticomystax (Kuhl), Gravenhorst, Deliciae Mus. Zool. Vratislav., Fasc. I, 



Lipsiae, 1829, p. 26. 

 Hyla leucomystax Schlegel, Abbild. neuer oder unvollst. bek. Amph., Diisseldorf, 



1837—44, p. 140, pi. L, figs. 1, 2, 4. 

 Rhacophorus macula tus (part.), Boulenger, Cat. Batr. Sal. Brit. Mus., 18S2, p. 83. 

 Hylorana longipes Fischer, Arch. f. Naturgesch., LI, I, 1885, p. 47. 

 Rhacophorus leucomystax Boulenger, Proc. Zool. Soc. London, 1889, p. 29, with 



fig. of skull. 

 Rhacophorus leucomystax Flower, Proc. Zool. Soc. London, 1896, p. 474, pi. 



XL1V, fig. 2 (with tadpole). 



