Mr. A. H. Hassall’s. Catalogue of Irish Zoophytes. 171 
On shells and corallines, particularly on N. 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. 
Discoprora. 
Discopora hispida.—From shells and corallines from deep water; 
not common ; Dublin bay. 
CELLEPORIDA. 
CELLEPORA. 
Cellepora pumicosa.—Dublin and Killiney bays; very common. 
Lepratia. 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. 
EscHARID2. 
Fiustra. 
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 Flustre, growing in bushy hemispherical tufts of 
