174 LIVERPOOL MARINE BIOLOGY COMMITTEE REPORT. 



Genus Memhraniporella (part), Smitt. 



Syn. Lepralia (part), Johnst. and Gray, Busk , &c. 

 Memhranipora (part), Smitt. 

 Berenicea (part), Fleming. 



Two British species. M. melolontha has not been 

 observed in our area. It is found on shells, oysters mostly, 

 at the mouths of rivers, as the Thames, Orwell, etc. 



Memhrani'porella nitida, Johnston. 



Lepralia nitida, Johnst., Couch , Busk, Hincks, Smitt. 

 Escharoides nitida, M. Edw. 



Isle of Man (E. Forbes) ; on Pecten, off Spanish Head, 

 Isle of Man (twenty fathoms), dredged by Prof. Herdman. 



Family XI. — Microporellid^. 



Syn. Celleporida (part), Johnst. 



MemhraniporidcB (part), Busk. 

 Porinidce (part), d'Orbigny. 

 EschariporidcB (part), Smitt 



Genus Microporella, Hincks. 



Syn. Po7'ina, Smitt 



Escharina (part), Gray, M. Edwards. 



All the four British species are found in our area. 



Microporella ciliata, Pallas. 



Lepralia personata, Busk. 

 Lepralia ciliata, Johnst , Busk. 

 Porina ciliata, Smitt. 



Isle of Man (Hincks). 



Microporella malusii, Audouin. 



Herentia biforis, Gray. 

 Lepralia malusii, Busk, &c. 

 Porina malusii, Smitt. 



Isle of Man (Hincks). Dredged off Spanish Head (Isle 

 of Man), on Pecten (twenty fathoms), by Prof. Herdman. 



