276 



dark streak on the canthus rostralis; limbs with dark cross- 

 bars ; lower parts white, with or without brown spots on the 

 throat. From snout to vent 40 mm. 



Ph. petersi is distinguished from Ph. aurifasciatus, after 

 Boulenger, by a larger, more distinct tympanum, longer digits 

 and a duller colouration. The size of the tympanum and the 

 colouration, however, are very variable in Ph. aurifasciatus, 

 and therefore the differences between the two species are 

 very slight, if at all present. Perhaps the shape of the snout 

 and the position of the nostrils are more valuable characters 

 in distinguishing both species. 



Habitat: Natuna islands (Bunguran) ; Borneo (Mt. Kina 

 Balu; Mt. Penrissen; Mt. Dulit). 



12. Philautus aurifasciatus (Schlg.). 



Hyla aiirifasciata (nomen nudum), Kuhl en v. Hasselt, Alg. Konst- en Letter- 

 bode, 1822, p. 104. 



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

 1837—44, p. 27, pi. IX, fig. 4. 



Ixalus aurifasciatus Boulenger, Cat. Batr. Sal. Brit. Mus., 1882, p. 100. 



Ixalus aurifasciatus Boettger, Ber. Ofifenb. Ver. f. Naturk. (1887 — 91), 1892, p. 142. 



Ixalus aurifasciatus v. Kampen, Weber's Zool. Ergebn., Leiden, IV, 1907^.404. 



Tongue without papilla. Head as long as broad ; snout 

 pointed, projecting, about as long as the upper eyelid, longer 

 than deep; canthus rostralis distinct, curved; loreal region 

 oblique, slightly concave; nostril as far from the tip of the 

 snout as from the eye; interorbital space broader than the 

 upper eyelid; tympanum feebly distinct, '/ 3 to nearly V 2 the 

 diameter of the eye. Disks of fingers and toes rather large, 

 those of third finger and fourth toe about as large as the 

 tympanum ; first finger shorter than second, which is shorter 

 than fourth; fingers free or very slightly webbed, toes '/ 3 to 

 Y 2 webbed; subarticular tubercles moderate; a small, rounded, 

 inner, no outer metatarsal tubercle ; no tarsal fold ; the heel 

 reaches the nostril or the tip of the snout; tibia half the length 

 of head and body or a little longer. 



Skin with a few small tubercles above, granular on throat, 

 belly and lower side of thighs. 



Coloration very variable. Brown, black, or green above, 

 darker marbled or with irregular yellow streaks; sometimes 

 a narrow light vertebral line; upper parts of snout often light, 



