196 Journal of the Asiutic Society of Bengal. [May, ee 
The Worm einai ie be beneficial to its host in that it assists 
the dispersal of the gemmules, while one of the Dipterous larva 
EXPLANATION OF Puarte I. 
Fig. 1.—Vertical = of a specimen of Spongilla o 
which has sunk to the bottom. The upper, light 
pees ion sanliving, the lower, dark pact practically dead. 
ebruary ‘oa (Natural size). 
G=gemmule. T=tube of icasests larva, R= 
rootlet of anes to which the Sponge was attached. 
Fig. 2.—An undetermined Beetle larva from Spongilla carteri. 
10. 
Fig. 8.—Ventel pce of larva of Sisyra sp., from 
eri, X 
All we oe are from specimens preserved in Petter 
PAPAL ALL PX PPL EIRP 
