2o8 
ZOOLOGY OF THE FAR EAST. 
These specimens consist of several dried fragments found lying in a field at the 
edge of the inner lake near Pak Payum (see map on p. 6 of this volume). They had 
evidently been torn from their support and cast up on the field by a flood that had 
occurred some weeks previous to my visit. The basal membrane, which seems to 
have been attached to a branch or a rough stone, is intact but the epidermal mem- 
brane has entirely disappeared. The sponge is hard and rather brittle, the skeleton 
comparatively stout. Most of the skeleton-spicules are normal, but many have one 
or more annular swellings. All are otherwise smooth. The flesh- spicules, which are 
numerous, are slender, closely and regularly spinned in the middle but smooth or 
nearly smooth at the ends. The form of the spicules is well shown in text-figure i. 
There are no gemmules. There is no trace of buds on the surface of the sponge, 
which bears short irregular branches or prominences. The specimens were bright 
green when found, but the colour has faded somewhat. 
Fig. 5. — Spicules of Spongilla nana from Patalung, x 250. 
Spongilla nana, Annandale. 
1915. Spongilla nana, Annandale, Mem. Ind. Mus., V, pp. 31. 32, fig. 3, pi. iv, fig. 3. 
Several minute cushion-shaped sponges attached to twigs from the mouth of the 
Patalung river at lyampam belong to the species recently described from the Chilka 
Lake. Their spicules, however, differ slightly from those of the type-specimen. Com- 
pare fig. 2 on this page with that printed on p. 31 of the paper cited above. A few 
gemmules were present. 
Spongilla potamolepis, sp. nov. 
(Plate II, fig. 5.) 
The sponge forms a crust from 2 to 3 mm. thick on sticks and bamboos. It is 
very hard and not at all brittle. The external surface is smooth and there are no 
