GASTEKOrODA. 311 



C. elei/antissima, Turt. 

 Not uncommon; ckedged 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 Dublhi 

 Bay. See his Conch. Diet., p. 210, Turho arenariiis. 



C. iinica, 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 ligure 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, JVIi". Hyndman. 



C. nitidissima, Mont. 



Dublin coast, Brown, Turton. Specimens from Portmarnock, Bundoran, 

 and Roundstone 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. 

 ]\Ii\ Alder remarks — " A specimen I have from Portmarnock is the 

 same as is marked Alcania (ilahra. Leach, in the British Museum, but it 

 may be a worn variety of Turritella ascaris." It has been collected at 

 the locality akeady named by Mr. Warren, and at Bundoran by Mrs. 

 Hancock. 



Genus TURRITELLA. 

 T. ferehra, Brown. 



In the Loughs of Belfast and Strangford this common species is dredged 

 aUve, from all depths, but chiefly from about 4 to 1 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 Fi/um 

 (every plant of which was many yards in length) with the beautiful and 

 singular appearance presented by innumerable quantities of these Turri- 

 tellce attached to this filiform alga, and maintaining their hold, no matter 

 to what degree it was waved about by the currents. 



Genus Brociius. 

 B. striatus. Brown. 



Among shell-sand brought from Bantry Bay, in 1834, W. T. Clarke, Mr. 

 JefiVevs. 



