1910.]} N. ANNANDALE: The Fauna of Yunnan. 197 
PART I.—SPONGES AND POLYZOA. 
By N. ANNANDALE, D.Sc., F.A.S.B., Superintendent, 
Indian Museum. 
SPONGES. 
1. Spongilla (Euspongilla) proliferens, Annandale. 
A small dried specimen on a piece of stick from a lake full of 
weeds at Mong Pan (alt. 5—6,000 feet), W. Yunnan. This species 
was also taken by Mr. Coggin Brown at Prome in Upper Burma. 
2. Spongilla (2? Euspongilia) yunnanensts, sp. nov. 
Sponge hard, coherent, light, forming small rounded masses of a 
dull greenish colour (dry); the surface smooth ; no branches ; 
the oscula conspicuous, level with the surface, circular, of 
moderate size, with well-defined borders; the external mem- 
brane adhering closely to the sponge, stretched over a con- 
es eee OS 
res I MOE 
a OE a ME Bie 
Fic, 1.—Skeleton spicules of Spongilla yunnanensis, Annand. 
siderable part of each osculum ; an ill-defined basal chitinous 
membrane present. 
Skeleton moderately loose, not very regular; the radiating fibres 
well defined but slender; the transverse fibres distinct, 
situated somewhat widely apart; a considerable amount of 
spongin present. 
Spicules.—Skeleton spicules (fig. 1) smooth, sharp, moderately 
slender, measuring on an average 0°246 X0'016 mm., as a rule 
nearly straight but not infrequently bent at an angle. No 
flesh spicules. 
Gemmules not observed. 
Habitat.—South outlet of Lake Ta-li Fu (Erh-hai), Yunnan, W. 
China; alt. 6,900 feet. Specimens taken at the beginning of 
March, Igto. 
It is always dangerous to describe specimens of Spongillide 
without gemmules as the types of species, but S. yunnanensts 
resembles S. philippinensis so closely in general structure that the 
two species must be closely allied. The former is distinguished 
by its smooth spicules and stronger skeleton. The type specimen 
measures 35 X 35 X 40 mm. and is attached to a small stone. 
