Sponges. 
205 
Mr. Gee has sent me specimens from Foo Mong, Soochow which undoubtedly be- 
long to this species. The skeleton-spicules are smooth, but often irregular in outline, 
the gemmule-spicules as a rule rather stout, the length of the shafts hardly exceeding 
the diameter of one rotule. Some, however, are considerably longer. The .shaft is as 
a rule smooth, but occasionally bears one or two short spines. The skeleton is com- 
pact. Bubble-cells are numerous in the parenchyma. The specimens are too 
fragmentary to permit any statement as to the external form of the sponge. 
Embryos and young gemmules occur together in a fragment I have examined. 
Numerous gemmule-spicules lie free in the parenchyma. 
Ephydatia bogorensis, Weber. 
1890. Ephydatia bogorensis, Weber, Zool. Ergebn. Res. Nied. Ost.-Ind., I, p. 33, pi. iv, fig. 11. 
The sponge forms small irregular masses attached to weeds. In spirit it is of a 
dirty white colour ; it is soft and the texture rather loose ; the external surface 
appears to have been smooth and no large apertures are apparent. Slender horizon- 
tal spicule-fibres are well-defined, branching freely in the sponge, but the transverse 
fibres are irregular and ill-defined. I can detect no bubble-cells. 
The gemmules are small, spherical, densely covered with upright spicules, but 
with the pneumatic layer feebly developed. There is a single short foraminal tubule. 
The skeleton-spicules are short, slender and as a rule sharply pointed at both ends. 
Their outline is irregular and they sometimes bear short scattered spines. The 
gemmule-spicules are long and have relatively small rotules, which have minutely 
denticulated and somewhat introverted margins. The shafts bear a considerable 
number of sharp, moderately elongate spines. These spicules are scattered in con- 
siderable numbers in the parenchyma, as well as surrounding the gemmules. 
I have compared specimens collected at Soochow by Mr. Gee with one from 
Java sent me by Dr. Max Weber. There are slight differences in the form and 
proportions of the skeleton-spicules, but the structure of the skeleton and of the 
gemmule is identical. 
E. bogorensis has been recorded from Java and Celebes. It is closely related to 
E. blembingid, Evans, from the Malay Peninsula. The gemmule-spicules of both 
species resemble those of Dosilia plumosa, Carter. 
Genus Trochospongilla, Vejdovsky. 
Trochospongilla latouchiana, Annandale. 
igir. Trochospongilla latouchiana, Annandale, op. cif., pp. 114, 115, figs. 23A, 24. 
A specimen collected by Mr. Gee at Loean Mong, Soochow agrees with Indian 
examples, except that the shafts of the gemmule-spicules are a little longer, nearly 
equalling the diameter of a single rotule. 
Trochospongilla sol, sp. nov. 
(Plate IX, fig. 6.) 
This sponge is described from a number of dry specimens attached to the lower 
surface of a stone. They form small oval or circular patches of a pale yellowish 
