BRITISH ZOOPHYTES. 247 



FAMILY IX. MICROPORID^. 



Zooecia ivith the front luall ivliole, calcareous ; margins 

 elevated. — T. H. 



Genus I. Micropoea, Gray. {fiiKpo<;, small.) 



Zoarium incrustiug. Zooecia with promiuent raised 

 margins ; front depressed, wholly calcareous ; orifice 

 semicircular or suborbicular, enclosed by a calcareous 

 border.— T. H. 



1. M. CORIACEA, Esper. Plate XX. fig. 3. 



Flustra coriacea U^sp., D. L.), Discopora coriacea 

 (Lamlx), Membranipora coriacea (Bush, McA.). 



Hab. : Shetland {A. M. N.), Cornwall, Guernsey 

 (T. jH".), Hastings [Miss Jelly), Aberdeenshire {G. W.P.), 

 Isle of Man [Forbes). 



The cells in this species are broad with thickened 

 margins, those at the sides terminating in a distinct 

 knob at the top. The orifice is small and semicircular, 

 with a straight lower margin. The whole of the cell 

 is dotted with small punctures. The appearance of 

 each cell is very suggestive of a mummy. 



2. M. coMPLANATA, Norman. 



Lepralia complanata [A. If. N.), Membranipora 

 Smittii [Manzoni) . 



Described by Mr. Norman in the Annals of Nat. Hist., 

 January, 1864, page 84, from specimens without label 

 in Mr. Barlee's collection. 



Genus II. Steganoporella, Smitt. {aTeyavb<i, covered, 

 porella, a little opening.) 

 Zoarium incrusting or (occasionally) rising into folia- 

 ceous expansions. Zooecia with the external characters 



