1904 - 5 .] The Pelagic Fauna of the Firth of Clyde. 
781 
Date. 
1902. 
Sea-temperature, 
Surface. F. 
Depth of Tow- 
net. Fins. 
Duration of 
Haul. Minutes. 
Net. Threads 
per inch. 
Predominant Species. 
Remarks. 
Jan. 4 
44-7 
1 
90 
76 
Pseudocalanus elon- 
gatus. 
Net attached to Keppel 
Pier. Sea very rough. 
Blowing nearly a gale. 
Water very dirty. 
„ § 
46*7 
1 
100 
76 
Pseudocalanus. 
Net attached to Keppel 
Pier. Sea rough. Water 
very dirty. 
„ 11 
44*8 
8 
60 
76 
Pseudocalanus. Acartia 
clausi. 
Weather frosty. 
„ 14 
42*9 
8 
60 
76 
Pseudocalanus. Acartia. 
Weather frosty. 
„ 17 
45*2 
8 
45 
76 
Pseudocalanus. 
,, 21 
45*9 
10 
30 
76 
Pseudocalanus. Acartia. 
Water rather dirty. 
„ 24 
44*7 
10 
30 
76 
Pseudocalanus. Fritil- 
laria furcata. 
„ 28 
44 
10 
30 
76 
Pseudocalanus. 
Weather frosty. Very 
strong flood-tide. 
Feb. 1 
44 
9 
30 
76 
Pseudocalanus . 
Weather frosty. 
„ 4 
43*7 
12 
40 
76 
Pseudocalanus. 
„ 7 
42-6 
8 
40 
76 
Pseudocalanus. Calanus 
helgolandicus. 
W eather frosty. 
,, 11 
42*8 
8 
40 
76 
Pseudocalanus. 
W T ater very dirty. 
„ 14 
438 
9 
30 
76 
Pseudocalanus. 
Weather frosty. 
,, 19 
41*6 
8 
30 
76 
Pseudocalanus. 
Coldest surface tempera- 
ture. 
» 22 
42 
7 
15 
76 
Calanus. Pseudocalanus. 
Air-temperature becoming 
warmer than sea -tem- 
perature. 
,, 25 
43*5 
9 
35 
76 
Calanus. Pseudocalanus. 
Water very dirty. 
Mar. 1 
43-4 
6 
30 
76 
Pseudocalanus. Coscino- 
discus. 
Gales on Feb. 26th, 27th, 
and 28th from the east. 
„ 4 
43*8 
12 
20 
76 
Calanus. Coscinodiscus. 
„ 7 
44*6 
9 
40 
76 
Calanus. Acartia. 
Pseudocalanus. 
,, 11 
44*8 
1 
40 
76 
Pseudocalanus. 
Water very dirty. Keppel 
Pier. 
„ 14 
9 
35 
76 
Calanus. 
„ 19 
7 
30 
76 
Fritillaria. Obelia nigra. 
Pseudocalanus. 
Plankton becoming much 
richer in species. 
„ 22 
45*3 
8 
30 
76 
Acartia. 
,, 25 
43 
8 
30 
76 
Copepoda. 
Weather frosty. 
„ 28 
44*3 
8 
30 
76 
Balanus nauplii. 
Apr. 1 
44'2 
5 
30 
50 
Decapod zoaeoe. 
Weather cold and stormy. 
A poor haul. 
„ 3 
9 
30 
50 
Oikopleura dioica. Bal- 
anus nauplii. 
„ 9 
44 
6 
30 
50 
Calanus. 
„ 12 
44 
6 
30 
50 
Balanus nauplii. 
Balanus breeding season. 
„ 15 
45 
6 
30 
50 
Balanus. Oikopleura 
dioica. 
,, 23 
47*5 
2 
15 
50 
Oikopleura. Balanus. 
Centropages hamatus. 
Calanus. Pseudo- 
calanus. 
Weather stormy and sea 
rough for several days. 
29 
47*8 
1 
30 
84 
Calanus. Acartia. 
Balanus. 
Finer net used ; full of 
Calanus. 
May 5 
46*8 
10 
30 
50 
Calanus. Hybocodonpro- 
lifer. Balanus. 
Net full of Calanus. Me- 
dusae becoming more 
abundant. 
„ 12 
47*6 
5 
30 
50 
Margellium octopunc- 
tatum. Calanus. 
Hybocodon. 
Cold winds for several 
days. 
„ 20 
47 
5 
15 
76 
Calanus. Hybocodon. 
„ 27 
47 
6 
lu 
60 
Calanus. 
Surface swarming with 
Calanus. 
June 6 
47-2 2 
10 
76 
Calanus. 
Keppel Pier. Very poor 
haul. 
