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ZOOPHYTOLOGY. 



Descriptions of New Polyzoa from Ireland. 

 By Rev. Thomas Hincks, B.A. 



The new species of Polyzoa which are described in this 

 paper have been obtained from material dredged in deep 

 water, off the coast of Antrim, by Mr. Hyndman of Bel- 

 fast, whose researches, as a member of the North of Ireland 

 Dredging Committee, appointed by the British Association, 

 have yielded so many valuable results. 



Sub-order Cheilostomata. 



Fam 1. MEMBRANIPOKIDiE. 



Gen. 1. Membranipora. 



1. 31. imbellis, n. sp., Hincks. Plate XXX, fig. 1. 

 Cells ovate, broad below, with a membranous covering (no calcareous 

 expansion); margin raised, much thickened, and beaded. Ovicell very 

 prominent, frosted, with a raised edging round the front. No spines nor 

 avicularia. 



The examination of a large number of specimens from 

 various localities, exhibiting a striking uniformity of charac- 

 ter, has convinced me that this form should be accounted a 

 species, and that it is not a mere variety of M. Flemingii. 



I have never detected, even in the youngest and freshest 

 specimens, any trace of spines or avicularia. The polyzoary 

 is generally dull and opaque, and coarse in texture. 



The size and distinctness of the cells, the absence of the 

 calcareous expansion, the shape of the ovicell, and the want 

 of spines and avicularian appendages are constant characters, 

 which separate this species from M. Flemingii. 



Common on shell, &c. Coast of Antrim, Mr. Byndman ; Scotland (west 

 coast) ; Devon. 



Gen. 2. Lepralia. 



1. L. alba, n. sp., Hincks. Plate XXX, figs. 2, 2 «. 



Cells sub-ovate, broad, somewhat depressed, granular; mouth rounded 

 above, lower margin straight, with a notch in the centre; an avicularium on 

 each side, about half-way down the cell ; mandible acute, pointing upward. 



