Mr. A. H. Hassall's Catalogue of Irish Zoophytes. l*J\ 



On shells and corallines, particularly on JV. loriculata. 



T. verrucaria. The Tupulipora verrucaria of Milne-Edwards has 

 not been described as British ; it is however of common occurrence 

 in Dublin bay, adhering usually to S. abietina. It differs from T. 

 patina in the cells not being placed in a cup, and from T. serpens in 

 their not being arranged in transverse rows. The tubes are some- 

 times separate and sometimes united. In this latter state it bears a 

 great resemblance to Discopora hispida, but may be known from it 

 by the apertures of the tubes being plain. See Plate VI. fig. 3, 4. 

 Is it not the small purple Eschara of Ellis ? 



T. serpens. — Not unfrequent ; Dublin and Killiney bays. 



Discopora. 



Discopora hispida. — From shells and corallines from deep water; 

 not common ; Dublin bay. 



CelIeporidjE. 



Cellepora. 



Cellepora pumicosa. — Dublin and Killiney bays ; very common. 



Lepralia. Johnston. 



Berenicea hyalina. — Dublin bay ; rare ; on shells. 



Lepralia variolosa. — Dublin bay ; rare. 



L. ciliata. Cells ovato-globose ; aperture circular with a small 

 excavation in its lower margin ; spines from 5 to 7, not immediately 

 surrounding the orifice of the cell, differing in this respect from L. 

 immersa, in which the spines arise directly from the margin. By 

 means of the indentation referred to, this species may always be 

 distinguished from others, even in the absence of the spines. 



On shells and fuci; not uncommon; Dublin and Killiney bays. 



" Lepralia 4-dentata, Johnston's Manuscript." Cells immersed, ar- 

 ranged alternately ; apertures quadrangular, and furnished with four 

 short teeth, placed near each angle. — A. H. 



This species was sent to Dr. Johnston some time ago by Mr. 

 Forbes, and subsequently by myself as a new species. See Plate 

 VI. fig. 5. 



Membranipora . 



Membranipora pilosa. — On shells, fuci, and corallines ; very com- 

 mon; Dublin and Killiney bays. 

 Var. dentata. Not common. \ 



EsCHARIDiE. 



Flustra. 



Flustra foliacea. The varieties of this species are very numerous. 



Dublin and Killiney bays ; very common. 



F. chartacea. This is the F. papyracea of Ellis, which for a long 

 time has been lost sight of. His description, however, is inaccurate, 

 inasmuch as he makes no mention of the spines, one of which is 

 placed at each distal angle of every cell. It is one of the most 

 beautiful of the Fluslrce, growing in bushy hemispherical tufts of 



