198 Records of the Indian Museum. [VoL. V, 
3. Spongilla (? Stratospongilla) cogginiz, sp. nov. 
Sponge not very hard, fragile, tomentose, of a brilliant green 
colour, forming irregular masses of moderate size, occasionally 
with short flattened branches; the oscula inconspicuous, 
usually situated in depressions on the surface ; external mem- 
brane closely adherent to the sponge; a well-defined but 
delicate chitinous basal membrane present. 
Skeleton close but not very coherent, forming an almost regular 
net-work with comparatively small meshes; radiating and 
transverse fibres of almost equal diameter ; very little spongin 
present. 
Spicules.—Skeleton spicules (fig. 2) moderately stout, measuring 
on an average 0°272X0'02 mm., pointed or rounded at the 
ends, as a rule straight or nearly straight; their surface 
minutely but not closely spined, the spines straight, becoming 
closer and slightly longer near the extremities, which usually 
Fic. 2.—Skeleton spicules of Spongilla coggini, Annand. 
terminate in a single spine of larger size than any of the 
KESt: 
Gemmules of moderate size, few in number, flattened at the base, 
dome-shaped above, with a central indentation or concavity ; 
their chitinous coat thin and brittle, covered by a delicate 
outer membrane in continuity with the basal membrane of 
the sponge; no granular or cellular pneumatic coat; no 
foramen ; no gemmule spicules. 
Habitat the same as that of S. yunnanensis, together with which 
this species was taken. 
The specimens of S. coggimt vary considerably in size, but the 
largest does not measure more than 50X 40X38 mm. There area 
great many of them, the majority being evidently complete. Many 
small stones and dead Corbicula and Margarya shells are included 
in their substance. I can find no trace of microscleres, but the 
gemmules seem to be fully formed, their outer coat being covered 
with diatoms, organic débris and small fragments of silica appar- 
ently of natural shape. 
