of the North of Ireland. 97 



Co. Deny — E. LI. P. Dead shells were dredged in some abundance around 

 Belfast and Strangford Loughs by Hyndman and Dickie, in from 15 to 30 

 fathoms (N. monilifera). 



Watiea Alderi, Forbes. 



This very pretty shell is common, living at nearly all depths (4 to 90 

 fathoms) throughout the waters dredged by Hyndman and Dickie (N. nitida), 

 and thrown up on sandy beaches throughout the province. 



Natiea XlXontacuti, Forbes. 



Thompson records a living specimen dredged in Belfast Bajr. Hyndman 

 took it alive off Lame, at different depths up to 90 fathoms, and dredged dead 

 shells in abundance around the entrance to Belfast Lough, in 15 to SO 

 fathoms (sub N. Montagui). It did not occur in any of Dickie's dredgings. 



[Watlca clausa, Broderip § Sowerby. 



Dredged by Hyndman and Jeffreys on the Turbot Bank. It is a glacial 

 fossil, and now inhabits the circumpolar seas alone. J 



AdeorMs subcarinatus, Montagu. 



Dredged up from the Turbot Bank by Hyndman, in a dead state, on several 

 occasions ; it is a southern shell, and has not been found elsewhere in our 

 district. 



Xiamellaria persplcua, Linne. 



" Generally distributed " — Thompson (Sigaretus perspicuus). Eare, living 

 on Laminaria, and dredged alive in the unusual depth of 80 fathoms north of 

 the Maidens, and dead in 15-25 fathoms off Ballygalley Head — Hyndman. 

 Very rare, dead, in 15-25 fathoms off the entrance to Strangford Lough — 

 Dickie. Sigaretus tentaculatus, recorded by Thompson as dredged by Mr. 

 Hyndman and himself in Strangford Lough, is the male of the present 

 species ; the typical form is the female. 



Velutina laevigata, 1'ennant. 



A species of frequent occurrence, living on hard ground at all depths. 

 Hyndman took it alive in 12 to 20 fathoms off Belfast Lough, and in 70-90 

 fathoms near the Maidens ; and in a dead state on the Turbot Bank. Dead, 

 rare, in 6 to 8 fathoms, off Bangor— Mr. S. A. Stewart. It did not occur in 

 Dickie's dredgings, probably owing to the muddy nature of the bottom in 

 Strangford Lough. Thrown up by the tide at Newcastle, Portrush, and 

 Magilligan— E.L1.P. 



var. Candida. Jeffreys found this white variety on the coast of Antrim. 



Trichotropsis borealis, Broderip $ Sowerby. 



In Hyndman's Eeports for 1857 and 1858, this species is noted as occur- 

 ring in a dead state in almost every haul of the dredge made around the 

 entrance to Belfast Lough, and on the Turbot Bank especially ; in the 1859 

 Report he records having obtained it alive in the latter place. Dead shells 

 also occurred to him in the deepest water at the Maidens. Dickie dredged a 



