of the Fishery Board for Scotland. 159 
Owing to the difficulty of distinguishing the species of Schizopoda off- 
hand, their occurrence is frequently recorded in the lists of tow-net fauna 
simply under the family names, “‘ Ephausiide” or ‘‘ Myside,” or the 
generic names ‘ Boreophausia sp.,” “ Mysis sp.,” as the specimens 
observed happened to belong to either group ; and before taking up the 
consideration of the detailed species, jt is proposed to consider briefly the 
distribution of the Schizopoda under these names, as follows :— 
THe Evenavusiipm.—The records of the Schizopoda under the name of 
Euphausiide or Boreophausia sp. amount to one hundred and twelve for 
the seven years, and taking the one year with the other, they are distributed 
over all the twelve months; but the largest number occur in the first four 
and the last three months, as indicated by the Table annexed, which 
shows the number of the records of the Euphausiide that are referred to 
simply under their family or generic names for each station, and for each 
month of the year for all the seven years. 
Taste I., showing the Distribution of the Euphausiide, as indicated by 
the Records for the Years, Months, and Stations :— 
5 om 
Y 6 re “| ao : 3 “3 Year | e oh= bd 
ears. : 3 = 5, > 2 = ep 2. < z 3 ge ears. KS = a > S a 
Slelelidalislisianlid|nlOolala 25 
eemerena ote ei) lt) <efathihare Dh ela) v2 | Beh pase0,! nd Sale Peo el Thy 
| 
Pees a GE 1S has) re eho a oul ie90, “ols Watters |ahh on 
Panes ot ge tA | lg oot ison 4 ey lo po hay = |"99 
mea | |) 24 1 lap rt |= |=) a0) 198% -|-2lay1)3|3 | 6 | 20 
| { 
| | 
Pe eA! = | 1h peal = (IY 44a Go O71 1898) | 5) 7 36 cd" | 3) 27 
eo Gg | || aves Pern |= 2 | 2a to WF eoae . ft) 1 jem] @ Parr) 10 
| | 
Pe 2 ee Eel St 1895 fs | PhS ete ets 
ae Ce mmr Me ais) iN totals “|. || ha teotierla. |. 
Totals for j17/99\13| 3/1115 |}5/1/2|9)| 6 \14/1134 for the |19/2s|13| 91/16/16] 113 
the Months | E 
? | Stations, 
Of these records thirty-one are for the Euphausiide observed in the 
surface tow-nets, while the other eighty-one are bottom tow-net records. 
In few of the surface gatherings were Euphausiide frequent or common, 
but in a number of the gatherings collected with the bottom tow-nets they 
were fairly numerous. The results brought out by these Tables regarding 
their distribution are referred to further on in connection with the 
detailed account of the different species. . 
Meanwhile I proceed to notice the records of the second group of the 
Schizopoda as they appear under the general name of Mysis sp. or Myside. 
I find that there are only thirty-three separate notices of Myside, and 
three of these are entered under the name Leptomysis sp. The reason for 
this is that most of the Myside were usually not so plentiful, and 
were identified at the time or shortly after they were collected. The 
records of Myside, though few in number, show a distribution very 
similar to the Euphausiidee—that is, they occur chiefly among the statistics 
for the colder months. There are no records of Myside for. the three 
summer months, while those for February, November, and December 
are together equal to 71 per cent. of the whole number. I shall now 
leave these more general groups for the present, and proceed to consider 
‘the distribution of those forms recorded under distinctive specific names, 
L 
