406 BATEACHIA. 



with pure-white tubercles ; web marbled with brown. A half-grown specimen (body 2 J inclies 

 long) has a broad dark-brown longitudinal band on each side of the vertebral streak, and 

 another irregular brown stripe along the side of the trunk ; the hinder and lower sides of its 

 thighs are densely marbled with brown, with two white bands running from the ham of one 

 limb to that of the other. The ground-colour of living specimens is green. 



The tongue is deeply notched behind. The thumb of the male is not thicker than that of 

 the female. The A'ocal sacs are small, entirely separate, situated in a slit below the angle of 

 the mouth ; their internal openings are very small, scarcely as wide as the external nostrils. 



We have received this fine species only from Ceylon and Madras ; it is much scarcer than 

 B. tiffrina, and attains to a length of 5^ inches, the hind limb being 8 inches (measured from 

 the vent). 



RAjVA cyanophlyctis. 



liana cyauoplilyctis, Schneid. Hist. Amph. i. p. 137. Peters, Sitzgsber. Berl. Acad. 1863, p. 78. 



bengalensis, Gray, Ind. Zool. Kelaart, Prodr. Faun. Zeyl. i. p. 193. 



lesclienaultii, Duni. ^ Bibr. Erpet. gen. \nu. p. 342. Cantor, Mai. Rept. p. 138. 



Snout of moderate length, but little pointed, without canthus rostralis ; tympanum rather 

 indistinct, as large as the eye. Lower jaw with two distinct, but scarcely prominent apophyses 

 in front ; the vomerine teeth are small, and form two short oblique series commencing from 

 the inner anterior angle of the choana?, and converging behind. No fold of the skin across 

 the occiput. Skin of the back finely tubercular, or nearly smooth. Hind limbs of moderate 

 length, the distance between vent and knee being one-half of the length of the body. Fingers 

 pointed ; tips of the toes very slightly swollen ; toes entirely webbed, the web reaching to 

 the tips of the toes ; a cutaneous fringe along the outer margms of the first and fifth toes ; a 

 very indistinct fold along the metatarsus. The fourth toe is not much longer than the third 

 and fifth. Metatarsus with a single pointed tubercle. Tongue deeply notched. Thumb of 

 the male somewhat swollen. The vocal sacs are large, externally separate, but communi- 

 cating with each other interiorly ; they are situated in a long slit at the lower margin of the 

 mandible ; their internal openings are of moderate size. 



Upper parts blackish- or brownish-olive, with irregular brown spots ; never a white vertebral 

 streak. Lower parts uniform white or spotted with brown ; a white band runs constantly 

 along the hinder side of the thighs from one ham to the other. 



This species is closely allied to B. hexadactyla, but remains much smaller, specimens from 

 If to 2 inches long being fully mature; the largest example I have examined is 2^ inches 

 long, the hind limb measuring 3f inches. It difiers constantly from R. liexadactyla in having 

 a longer thigh. It is common in Ceylon (whence we have received numerous examples) and 

 in Southern India, but is less numerous in the Malayan peninsula ; it occurs also in Lower 

 Bengal. 



