242 Hour & Beaumont—Survey of Fishing-grounds, W. Coast of Ireland, 1890-91. 
Antennal 
Length scale Shape of Length of Shape of Lateral 
in Tarsus. |compared with) antennalscale| cleft of cleft of spines of 
mm. | peduncle of | (not width). telson. telson. telson. 
| antennule. 
i, ® om | OO logan” intermed. | intermed. | ‘‘negl.” | “ negl.” | intermed. 
13, @ me} || 98 yilong. | Sage? |) Seago” || 99 Hla.” 
G 2 2B} || OS lates” SSE Tom “ flea.” | intermed. | “ megl.” | “ flex.” 
ID, & 22 || “les. intermed. | “ flex.” 
Hi. @ ST ccrlec ae GS 00iNo? —|| Creal” || 9 jam” — || 88 jrtames ce flex.” 
1 fs} || 98 jikaapo ‘““megl.”’ | intermed. | ‘‘negl.” | “negl.” | << flex.” 
Gio S 17 | “flex.” | megl.? | * meg”? ‘Silene 
lal, ® 16 intermed. | ‘ negl.” intermed. | ‘“ flex.” 
i, @ 16 | SLE a OOS” || Baap” || 89 jfiaie)” Cex. 
Yo 2 WS |) 98 a? || OS Gaga? eC flex. intermed. 
IK, 6 14 | “ megl.(2)| * negl.” | *megl.” | * flew. | « flex.” Clemons 
i, & 13 | ‘* negl.” | “flex.” | “ flex.” intermed. 
M. g 4 |) aio | “Gages? || Sipaatl,”? “flex.” “negl.” | intermed. 
N. 3 12 | “negl.’(?)| mntermed. | ‘‘megl.”” | ‘flex. | “negl.” intermed. 
| 
The net result appears to us to prove that if MW. flecuosa and M. neglecta have 
been rightly separated, their distinctive characters have been very imperfectly 
defined. As the species stand at present, the Irish examples which we have seen 
are typical of neither. ‘I’'wo characters, those of the tarsus and of the lateral 
spines of the telson, are almost certainly variable with the size of the example. 
Macromysis neglecta (G. O. Sars). 
As appears from our remarks under the preceding, we have great doubts as to 
the validity of this species.+ Our doubts appear to be shared by Ehrenbaum. 
Specimens have been recorded under this name as follows :— 
Trish Record.—Valentia Harbour (A. O. W.*). 
Distribution.—Loch Fyne ; Starcross ; Plymouth ; North Wales; Guernsey 
(A. M. N.*); Irish Sea (A. O. W.). 
Norway ; Denmark (A. M. N.*): Heligoland (Khrenbaum). 
+ In the museum are four specimens from the Asbjornsen collection (Christiania) named by Professor 
Sars. We have examined them in so far as was possible without isolating the appendages. They consist 
of two males, 16 and 17 mm. ca., including antennal scales and uropods, and two females, 17 and 20 mm. 
In each of the four we have found at least one leg with the tarsus 6-articulate. The two males have 22 
lateral spines on the telson, a number in excess of that assigned to the species by Norman, but perhaps, 
