Length 
in mms. 
— 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
20 
Tota 
Males 
... 
... 
2 
8 
3 
3 
1 
G 
2 
7 
3 
5 
1 
1 
... 
... 
42 
Females 
10 
29 
11 
10 
19 
9 
4 
11 
4 
4 
4 
4 
1 
2 
2 
... 
130 : 
„ Berried 
... 
... 
... 
... 
... 
... 
... 
... 
... 
8 
8 
24 
2 
9 
22 
12 
85 
TotalFemales 
10 
29 
11 
16 
19 
9 
4 
11 
4 
12 
12 
28 
3 
11 
24 
12 
215 
Below 7 mms. I did not find it possible to distinguish by 
external characters between the sexes. As in other cases higher 
in the scale, the secondary sexual characters evidently develop 
most conspicuously with the ripening of the male organs. The 
characters of the male are for the most part at least positive acqui- 
sitions to or modifications of the indifferent type to which the 
female very nearly approximates. 
Localities : — Cullercoats, St. Mary’s Island, Craster (where, like 
Cullercoats, it evidently is abundant). 
Schistomysis spiritus , Norman. 
One specimen, a female obtained at Cambois Bay on 29tli 
August, 1896, evidently belongs to this species. It answers most 
closely to Norman’s description and Sars’ figures. 
Schistomysis ornata (G. 0. Sars). 
A small female most nearly approaching the characters of this 
species was obtained at Cullercoats, on 1st September, 1900. 
Occasionally a very small immature mysid was obtained with 
Schistomysis characters. 
Neomysis vulgaris ( J. Y. Thompson). 
About 20—30 young and adult were caught in the Coquet 
about a mile from the entrance to Amble harbour on 11th October, 
1900. Dr. G. S. Brady got it at Alnmouth in brackish pools in 
September, 1865. 
It will be interesting to add to the list a few notes from the 
diary of the catches made during the summer relative to the 
frequency of the Mysids in the harbour at Cullercoats. (One 
asterisk, occurring; two asterisks, common; three asterisks, very 
common or abundant). 
