of the North of Ireland. 65 



Itlodlolaria costulata, Risso. 



Found at Bundoran, Co. Donegal, by Mr. "Waller— Jeffreys. 

 Modlolaria discors, Linne. 



"Larne Lough, not •uncommon. Donaghadee, 8 to 10 fathoms, Dr. Drum- 

 mond" — Thompson (sub Modiola discrepans). "Living, rare, at the roots 

 of Antennularia and other Zoophytes, in from 10 to 25 fathoms " — Hyndman, 

 who also obtained it, dead, on the Turbot Bank (sub Crenella discors) . Craw- 

 fordsburn, Mr. S. A. Stewart— Belf. Mus. Coll. 

 Crenella rhombea, Berkeley. 



" Bundoran (Waller) " — Jeffreys (Supplement). 

 Crenella decussata, Montagu. 



Living in gravelly sand, in 15 to 30 fathoms, off Donaghadee, Black Head, 

 and Larne, and it was one of the few species which Hyndman obtained alive 

 in Larne Lough (4-5 fathoms). Thompson's only Irish note of the species 

 states that Mr. Hyndman dredged a few odd valves in Strangford Lough ; 

 Dickie took it alive in 18-20 fathoms at the entrance of the latter. 

 Xucula nucleus, Linne. 



Abundant, living in 5-90 fathoms, in sand and gravel, throughout the North 

 of Ireland. 

 var. radlata, though stated by Thompson {sub N. margaritacea) to be common 



around the coast, has apparently a more limited distribution in our waters. 

 XTucula nltlda, G. B. Sowerby. 



Living in mud and sand in from 12 to 20 fathoms, off Donaghadee and 

 Black Head — Hyndman ; and frequent in 4-25 fathoms in Strangford Lough 



Dickie. Hyndman also records it, with doubt, from 1-4 fathoms, Brown's 



Bay, Island Magee. Dead shells occur on the Turbot Bank. 

 Nucula tenuis, Montagu. 



Hyndman records having dredged this species alive in deep water near the 

 Maidens, and specimens labelled as from that locality are in the Belfast 

 Museum. 

 Iteda pygmaea, Miinster. 



" On the Antrim Coast" — Jeffreys (all said of it). Belfast Lough — Belf. 

 Mus. Coll. It is rare as a British species, inhabiting chiefly the Scandinavian 

 and arctic seas. 

 leda minuta, Mutter. 



Portrush ; 23 fathoms in Belfast Bay ; and 50 fathoms off South Eock, Co. 

 Down ; all by Mr. Hyndman— Thompson (sub Nucula minuta). In his sub- 

 sequent systematic exploration, Hyndman obtained it occasionally, living in 

 mud, gravel, and sand, in from 12 to 90 fathoms, and more frequently dead, in 

 1-90 fathoms (sub L. caudatd). Dickie took it alive in Strangford Lough. 

 Pentunculus glycymerls, Linne. 



Living in sand and gravel in 10-90 fathoms all round our coast ; and more 



