of the North of Ireland. 63 



Pecten striatus, Mutter. 



"A single specimen dredged in Strangford Lough in 1837 by Mr. Hynd- 

 man and myself " — Thompson. Hyndman obtained it twice alive off Donagh- 

 adee, in 12 and 20 fathoms respectively, and also in 70-90 fathoms off the 

 Maidens, and dead on the Turbot Bank. Dickie dredged dead valves in Strang- 

 ford Lough. 



Pecten similis, Zaskey. 



No note of its having been taken alive, but dead valves have been dredged 

 frequently at the mouth of Belfast Lough, in 15-35 fathoms, and Dickie 

 records the same from the entrance of Strangford Lough, 12-15 fathoms. 



Pecten maxlmus, Linne. 



Common here as elsewhere, living in 7-25 fathoms. "Along the Antrim 

 and Down coasts, where it is commonly called clam, and used as human food, 

 though not so generally esteemed as the scallop (P. opercularis) " — Thompson. 



Lima subanriculata, Montagu. 



Dead valves only, in from 4 to 90 fathoms on various parts of the Antrim 

 and Down shores, by the Ordnance Survey collectors, Thompson, Hyndman, 

 and Dickie. 



lima Iioscombii, O. B. Sowerby. 



"Dredged very sparingly, alive, in the deeper portions of Belfast and 

 Strangford Loughs, on sandy and shelly ground. Single valves of large size 

 obtained in quantity from 23 fathoms at the entrance to the former by Mr. 

 Hyndman. Obtained occasionally in the stomach of haddock taken on 

 the North-East coast " —Thompson, whose L. fragilis also belongs to this 

 species. Hyndman procured it frequently, both living and dead, in 15-90 

 iathoms ; Dickie took it alive outside Strangford Lough, in 12-15 fathoms. 



lima hlans, Gmelin. 



"The Ordnance Museum contains upon a card a fresh-looking specimen 

 of this shell, as dredged from 7 fathoms in Belfast Bay" — Thompson 

 (sub L. tenera). Hyndman's only note of it is a repetition of this record. 

 From a note in Jeffreys' work, Waller would appear to have taken it some- 

 where on the North-East coast, and the Belfast Museum Collection contains a 

 specimen of Thompson's labelled " Belfast Lough." 



It is very doubtful if this species can be now reckoned among our indi- 

 genous mollusks ; but it lived in abundance in our waters at no very distant 

 date, for the Estuarine Clay at Magheramorne, on Lame Lough, yields it in 

 the greatest profusion, and it has been found in the similar deposit at Belfast. 



Pinna rudis, Linne. 



This fine species, our largest British shell, inhabits the waters off Black 

 Head (25-30 fathoms), where it has been obtained by Hyndman (P. pectinata) 

 and others. Thompson mentions (sub P. ingens) a wider distribution ; he says 

 of it, "the very few specimens, all taken in deep water, which I have seen 

 from the coasts of Londonderry, Antrim, Down, and Louth, were of large 



