159 



convex, not extending on to the back, lower than the lower 

 one, the edge of which forms a double curve. 



Mouth terminal; the lower lip projects beyond the upper 

 one and has a deep notch in the centre; papillae, jaws and 

 teeth absent. 



Very transparent in life; upper surfaces generally yellowish 

 brown, mottled along the vertebral line with dark brown ; 

 lower surfaces colourless or pale dirty buff; muscular part of 

 tail pale yellowish brown, getting darker towards the point; 

 the crests buff, mottled with yellowish brown and with irre- 

 gular dark brown markings along the edges; the brown mottling 

 gets more continuous and darker towards the point of the 

 tail and ends abruptly in front of the tip; iris yellow. Length 

 37 7, mm. 



Habitat: Sumatra (Deli!; Laut tador). — Burma; Siam ; 

 Malay Peninsula. 



3. Geny ophry ninae. 



Lower jaw toothed, upper one toothless. 

 Distribution: Sud-Est isl. (east of New Guinea). 



I. Genyophryne Blgr. 



(BouLENGEU, Proc. Zool. Soc. London, 1890, p. 326). 



Pupil horizontal. Tongue entire, free at the sides. Teeth on 

 the palatine bones and eight or nine small teeth on the 

 anterior extremity of each mandible. A denticulated transverse 

 dermal ridge across the palate in front of the pharynx. Tym- 

 panum hidden. Fingers free, toes webbed at the base, the 

 tips slightly dilated. Outer metatarsals united. 



No procoracoids or clavicles. 



Distribution: Sud-Plst isl. , 



I. Genyophryne thomsoni Blgr. 



Genyophryne Thomsoni Boulenger, Proc. Zool. Soc. London, 1890, p. 327, pi. XXV, 

 figs. I, I a, \b. 



Tongue oblong. Head large, much depressed ; eyes wide 

 apart, small. First finger shortest, third much longer than 

 second or fourth; inner metatarsal tubercle indistinct. 



Skin smooth; heel with a triangular dermal process. 



Pinkish brown above, variegated with blackish; temples 



