GASTEROPODA. 
311 
G elegantissima , Turt. 
Not uncommon; dredged in harbour at Bantry (3 — 4 fathoms). Mr. 
M ‘Andrew. 
C. decussata, Mont. 
Given on the authority of Turton only, who notes it as found in Dublin 
Bay. See his Conch. Diet., p. 210, Turbo arenarius. 
C. unica, Mont. 
Noticed by Turton as from Dublin Bay, very rare. Specimens from Port- 
marnock (Mr. Warren) and Clontarf (Miss M. Ball) have come under my 
inspection ; on examining six of these from the former locality, each was 
found to have nine volutions, the number attributed to the species in Mon- 
tagu’s description, though his figure represents about 13. Bundoran, Mrs. 
Hancock . M. Malbay, Prof. Harvey. Dredged in harbour at Bantry 
(3 — 4 fathoms), Mr. M‘Andrew. Mr. Barlee in a letter to me mentions 
that he has procured this species commonly at several localities in the 
South of England, and C. nitidissima always with it, but in every locality 
very much scarcer. Deep water, Belfast Bay, 1850, Mr. Hyndman. 
C. nitidissima, Mont. 
Dublin coast, Brown, Turton. Specimens from Portmarnock, Bundoran, 
and Boundstone have come under my inspection ; from the last a spe- 
cimen procured by Mr. Barlee was kindly sent to me. Prof. Harvey has 
obtained it very rarely in sand at Miltown Malbay. 
C. ascaris, Turt. 
New and very elegant species from Seafield on the Atlantic ; very rare. 
Turton’s Catalogue, Irish shells. See his Conch. Diet., p. 217. From 
Portmarnock, in Mr. Warren’s collection. 
C. glabra, Leach. 
Mr. Alder remarks — “ A specimen I have from Portmarnock is the 
same as is marked Alvania glabra, Leach, in the British Museum, but it 
may be a worn variety of Turritella ascaris .” It has been collected at 
the locality already named by Mr. Warren, and at Bundoran by Mrs. 
Hancock. 
Genus Turritella. 
T. terebra, Brown. 
In the Loughs of Belfast and Strangford this common species is dredged 
alive, from all depths, but chiefly from about 4 to 10 fathoms on sand or 
ooze ; in Carlingford Bay it has been observed living between tide-marks, 
by Mr. Hyndman. This gentleman, accompanied by Dr. Ball and Pro- 
fessor Edw. Forbes, when dredging Clew Bay, in July, 1840, were 
much attracted when passing over great submarine tracts of Chorda Filum 
(every plant of which was many yards in length) with the beautiful and 
singular appearance presented by innumerable quantities of these Turri- 
tell(B attached to this filiform alga, and maintaining their hold, no matter 
to what degree it was waved about by the currents. 
Genus Brochus. 
B. striatus, Brown. 
Among shell-sand brought from Bantry Bay, in 1834, W. T. Clarke, Mr. 
Jeffreys. 
