[xX Gas 
3. RHACOPHORUS. 89 
a black spot on the axille; membrane between the three outer 
fingers and the four outer toes with a large black spot. Male with 
an internal vocal sac. 
Jaya; Sumatra. 
a-b. SQ. Batavia. 
ce. Her. Java. Leyden Museum. 
? Rhacophorus reinwardtii. 
Larva. 
There are in the Collection three tadpoles from Posata, Bantam, 
quite different from any Batrachian larva ever noticed, they being 
furnished with an adhesive ventral disk, very similar to that of the | 
fishes of the family Gobiesocide. In one of these tadpoles the hind 
limbs are already so much developed as to show that the toes are 
webbed to the tips, which are dilated into large disks. Lthacophorus 
reinwardti being the Javan Frog in which the toes are the most 
broadly webbed and furnished with large dilatations, I refer theso 
larve provisionally, though not without doubt, to the present species. 
Body twice as long as broad ; spiraculum lateral, on the left side, 
nearer the base of the tail than the end of the snout. Beak strong, 
upper mandible transparent, lower black ; lips much developed, their 
inner surface lamellated. he adhesive ventral apparatus represents 
a disk the anterior third of which is cut off; it is situated imme- 
diately behind the mouth, and its posterior border corresponds to the 
vertical of the spiraculum ; the lateral and posterior borders are free 
toaslight extent. The tail measures once and two thirds or once and 
