DUBLIN- BAY DREDGING COMMITTEE. 29 



Crustacea, which are rare elsewhere, — Eupagurus lecvis, Inachns Dorsetfensis, 

 Pinnotheres pisum, Tetromatus JBellianns, &c. The bank is not easy of 

 attainment, as it requires smooth water for its proper working, and the past 

 season in Dublin has been a succession of easterly and westerly gales. 



From all these grounds a number of species have been obtained ; of these, 

 the Annelida and Zoophytes are yet undetermined, but the author hopes to 

 put in a list of them at the next meeting of the Association. Of other 

 groups, the following number of species have been determined : — Fishes, 10, 

 one, Ophidion imberbe, new to Ireland : Mollusca, 188, exclusive of Polyzoa ; 

 of these none are new to Ireland : Crustacea, 7-3 ; of these 5 are hitherto un- 

 recorded in Ireland, 8 new to the east coast: Arachnida, 2: Echinodermata, 

 30, one, Asterias rosea, new to Dublin, &C. Sponges are omitted for the 

 present. In the present immature condition of these researches, it were pre- 

 mature to attempt any general conclusions; but the results as yet obtained 

 go strongly to confirm an opinion advanced by the author some years since, 

 regarding the absence of southern types on the Dublin coast, which occur 

 further north, and which led him to the adoption of an eastern Irish or 

 Dublin district, extending from Dundrum Bay to Carnsole Point. For the 

 identification of most of the species the writer is responsible, with the ex- 

 ception of the minute Molluscs; these Edward Waller, Esq., kindly took in 

 hand — frequent recurrence of his initials in the accompanying list will show 

 with what success. Great quantities of the fine sand obtained in these 

 researches is yet un worked, so that it is probable that ere our next report 

 other species may be added to those here given. 



To complete the work, the Committee would ask that the Committee may 

 be appointed, with the addition of Edward Waller, Esq., as follows : — Pro- 

 fessor J. It. Kinahan, Dublin ; Dr. W. Carte ; Professor J. Reay Greene ; Dr. 

 E. P. Wright, and Edward Waller, Esq.; and that a further sum, not exceed- 

 ing £15, be placed at their disposal for this purpose, to enable them to 

 complete this investigation. 



List of Species obtained in Kingstown and Killiney Bays, and a few from 



Baldoyle. 



Saxicava rugosa, living, v^ry common. Psammobia Ferroensis, single valves, not 



arctica, living, not uncommon. common. 



Sphrenia Binghami, living, one specimen : tellinella, very common. 



Dalkey Sound. Tellina crassa, very common. 



Mya tnmcata, dead, not uncommon. incarnata, dead, single valves only. 



arenaria, living, young specimens. tenuis, living, rare. 



Corbula nucleus, living, not common ; dead fabula, dead, single valves. 



valves, very common. solidula, rare, living. 



Lyonsia Norvegica, living, rare. donaeiua. 



Thracia phaseolina, living, rare, double pygnnea, very rare, living. 



valves. Syndosmya alba, common. 



villosiuseula, not rare. Scrobicularia piperata, one dead specimen, 



distorta, living, rare. on Shell Bank. 



Cochlodesma proetenue, dead, single valves Mactra solida, rare, living here. 



only. • subtruncata, one single valve. 



Solen marginatus, dead, single valves only. elliptica, very common. 



siliqua, living, in Killiney Bay. stultorum, rare here. 



ensis, living, in Killiney Bay. Lutraria elliptica, dead, shells only. 



■ pellucidus, living, in some numbers, in Tapes decussata, uncommon. 



Killiney Bay. pullastra, not uncommon. 



Solecurtus candidus, single valves without virginea, very common. 



epidermis : Shell Bank. Venus casiua, uncommon. 

 coarctatus, a pair of valves : Dalkey striatula, rare here. 



Sound. fasciata, common. 



