4 
H. James-Clark—The American Spongilla. 427 
_ new ‘Sounge fe, Ann. Mag. Nat. Hist., July, 1871) has an- 
; etn needles. yea ne mie Soa “a heron she in- 
2 contractility of the living sponge, can appreciate the ad- 
aS Nat, Hist., vol. i, 1867, “ On the Spongie corres 
_ fusoria Flageliaia.” 
* 
