922 Horr & Braumontr—Survey of Fishing-grounds, 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 Lophogastridz, seven of Euphauside, and 
thirty-three of Myside. Of the Euphausids, Boreophausia mermis (Kroyer), B. 
Raschii (M. Sars), Thysanoessa longicaudata (Kroyer), and Nematoscelis megalops, 
G. O. Sars, have not yet been taken in Irish waters. Nematodactylus béopis, 
Calman, 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 has only been taken at 1020 
fathoms, or 20 fathoms below the line of soundings which constitutes Norman’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 Luphausia pellucida, Dana, within the British area. 
Recent observations have altered Norman’s list of British species of Mysidz in 
personnel, but not in number, Srriella frontalis, M.-Kdw., having been expunged 
from the list, while Duasymysis (Acanthomysis) 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 norvegica, G. O. Sars. 
S. jaltensis, Czern. 
S. Brooki, Norman. 
Erythrops Goésu, G. O. Sars. 
LE. elegans, G. O. Sars. 
Schistomysis Helleri (G. O. Sars). 
S. Parkeri, Norman. 
As some set-off to these deficiencies, we are able to add two species to the 
British list, viz. Parerythrops obesa, G. O. Sars, and Mysidella typica, G. O. Sars. 
Two species, S. norvegica and LH. elegans, have been recorded by Walker 
from the Irish Sea.t 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 with nets suit- 
able for the capture of Myside and the like. Hence it is by no means remarkable 
that the littoral forms, which are a large proportion of the above list, do not 
+ Though the localities of 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 the Isle of Man appears to be the natural 
line of demarcation between Great Britain and Ireland. 
