PLATE XLV. 



FIG. 



1. MiCROPORELLA MaLUSII, var. THYREOPHORA, 



p. 212. 



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



3 , var. from Santa Cvwz, with elongated 



cell, p. 274. 



4. PoRELLA coMPRESSA, p. 830 ; zooecia. Sec wood- 

 cut, p. 322. 



5. , detached group of cells on the sur- 



face of the zoarium. 



6. " 



-, zooecia deeply immersed and with 



sinuated orifice. 



7 7 a. , showing the primary orifice 



7 b, outline of adult orifice. 



