234 Horr & Braumont—Survey of Fishing-grounds, W. Coast of Ireland, 1890-91. 
exopodite of one. ‘The eyes are large, of a pale reddish colour. What remains 
of one antennal scale has the characters of the genus. The pleopods are simple. 
The telson is broken off rather short, but the proximal spines of the lateral 
margins are rather few, as in MW. didelphys rather than MW. angusta. ‘There is a 
single spine on the ventral side of the otocyst, a character common to these two 
species. ‘The size of the eyes, the lateral margins of the telson, and the some- 
what robust form of the whole animal are sufficient, as we think, to justify our 
determination. 
From Station 115, in addition to sixteen mature and half-grown specimens, 
we have two which are quite small. ‘They can be referred without difficulty to 
the same species as the larger ones, and serve, by comparison, to confirm our 
determination of the mangled example from Station 125. MM. didelphys is 
recorded by Sars from 50 to 150 fathoms, whereas JZ angusta has not yet been 
taken below the 50 fathom line. 
Previous Irish Record.—Off Valentia (A. M. N.*). 
Distribution—Shetland ; Firth of Clyde; Loch Fyne; Moray Firth; Firth of 
Forth; off Tynemouth (A. M. N.*). 
Norway ; Denmark (A. M. N.*). 
Mysidopsis gibbosa, G. O. Sars. 
Survey.—Station 118, Ballinskelligs Bay, 32 to 28 fathoms, soft mud. August 
2lst, 1890. 
Marine Laboratory.—Fahy Bay, Ballynakill, 5th March and 18th May, 1899. 
Museum, Dublin.—No. 195, 1895. Roundstone. 
Previous Irish Records.—Valentia (A. M.N.*): Valentia Harbour (A. O. W.*). 
Distribution.—Loch Fyne; Firth of Forth (A. M. N.*): Plymouth (W. 
Garstang !): Start Bay: Irish Sea, Port Erin (A. O. W.). 
Norway; Denmark; Mediterranean (A. M. N.*). 
Mysidopsis angusta, G. O, Sars. 
Survey.—Station 118, Ballinskelligs Bay, 32 to 28 fathoms, soft mud. August 
21st, 1890. 
Station 148, 7 miles 8.S.W. of Gregory Sound, Aran, 38 fathoms, sand. 
April 9th, 1891. 
Previous Irish Record.—Valentia Harbour (A. O. W.*). 
Distribution. E. and W. Scotland (A. M. N.*): Dogger Bank (T.S8.): Start 
Bay, and off Plymouth. 
Norway ; Naples (A. M. N.*). 
