222 Holt & Beaumont — Siwveu of Fishing-firouuds, W. Coast of Ireland^ 1890-91, 



the Irish fauna, as we at present know it, with that of the British Isles generally. 

 Norman's list contains one species of Lophogastridse, seven of Euphausidse, and 

 thirty-three of Mysidte. Of the Euphausida?, Boreoplumsia inermis (Kr5yer), B. 

 Raschil (M. Sars), Thysanoessa longkaudata (Kroyer), and Nematoscelis megalops^ 

 G. 0. Sars, have not yet been taken in Irish waters. Nematoductijlus h'dopis, 

 Caiman, a recent addition to the family from deep water off the S.W. of Ireland, 

 cannot yet be included in the British fauna, since it lias only been taken at 1020 

 fathoms, or 20 fathoms below the line of soundings which constitutes Noi-man's 

 western boundary of our zoological dominions. The same remark applies to 

 Eucopia australis ; and these species will probably be met, as predicted by Norman 

 in the case of Biiphausia pellucida, Dana, within the British area. 



Recent observations have altered Norman's list of British species of Mysidse in 

 personnel, but not in number, Siriella frontalis, M.-Edw., having been expunged 

 from the list, while Dasymysis [AcantJiomysis) longicornis, M.-Edw., has been 

 added thereto. 



We can find no record of the following species from Irish waters, nor are they 

 represented in our material : — 



Siriella norvcgica, G. O. Sars. 

 S.jaltensis, Czern. 

 S. Brooki, Norman. 

 Erythrops Goesii, G. 0. Sars. 

 B. elegans, G. 0. Sars. 

 Schistomysis Heller i [G. 0. Sars). 

 S. Parker/, Norman. 



As some set-off to these deficiencies, we are able to add two species to the 

 British list, viz. Parerythrops ohesa, G. 0. Sars, and Mysidella typica, G. 0. Sars. 



Two 'species, S. norvegica and E. elegans, have been recorded by AValker 

 from the Irish Sea.f It seems improbable that they are absent from the 

 coast of county Down, and, in fact, the observed differences in the British and 

 Irish lists are unlikely to survive a proper investigation of the Irish area. The 

 Society's surveying expeditions were concerned with the fishing-grounds, at that 

 time in many cases unexplored. These grounds are mostly at considerable depths, 

 and comparatively little time was available for inshore operations witli nets suit- 

 able for the capture of Mysidee and tlie like. Hence it is by no means remarkable 

 that the littoral forms, which are a large proportion of the above list, do not 



f Though the localities o£ some of Walker's records from the Irish Sea are actually nearer to the Irish 

 than to the English coast, the deep channel to the westward of tlie Isle of Man appears to be the natural 

 line of demarcation between Great Britain and Ireland. 



