REPORT ON THE POLYZOA. 173 



Genus Microporay Gray. 



Syn. Discopord (part), Lamarck. 

 Memhranipora (part), Busk 



Two British species. 



Micropora coriacea, Esper. 



Flustra coriacea, Esper. 



Memhranipora coriacea, Busk, B.M Cat. ii. 



Isle of Man (Forbes). 



Family X. — Cribrilinid^. 



Syn. EscharidcB (part), Johnston. 

 Memhraniporiclce (part). Busk. 

 EschariporidcB (part), Smitt. 



Genus Cribrilina, Gray. 



Syn. Lepralia (part), Jolinst., Busk. 

 Escharipora, Smitt. 



Five British species. 



Cribrilina radiatay Moll. 



Lepralia innominata, Couch., Johnst., Busk., &c. 



A Mediterranean form, abundant on south and south-west 

 coasts of England, ranging to Isle of Man (Hincks). 



Cribrilina punctata^ Hassall. 



Lepralia punctata, Has., Johnst., Busk 



Isle of Man (Hincks). 



Found on wood near Spanish Head, Isle of Man. 

 The punctures are very large, and arranged regularly, 

 forming a beautiful network over the front of the cell. 



Cribrilina annulata, Fabricius. 

 Lepralia annulata, Johnst., Busk. 

 Isle of Man, rare (Hincks). 



