PLATE XLV. 



FIG. 



1. MlCROPORELLA MALUSII, var. THYREOPHORA, 



p. 212. 



2. SCHIZOPORELLA HYALINA, Var. CORNUTA, p. 273. 



3. , var. from Santa Cruz, with elongated 



cell, p. 274. 



4. PORELLA COMPRESSA, p. 330 ; zooBcia. See wood- 



cut, p. 322. 



5. , detached group of cells on the sur- 



face of the zoarium. 



, zooecia deeply immersed and with 



sinuated orifice. 



7,7 a. - , showing the primary orifice : 



7 b, outline of adult orifice. 



