: 
XL—NOTES ON THE ANIMAL PLANKTON FROM H.MS. 
‘RESEARCH.’ By Tuomas Scorrt, F.L.S. 
This collection, which consisted of twenty-four tow-net gatherings, was 
contained in twenty-two small bottles: all the gatherings (with one 
exception) were collected at the surface uf the water, in the Shetland- 
Faroe Channel, at the end of July and the beginning of August last 
year, by H.M.S. ‘Research.’ The collections were made by a tow-net 
made of fine silk bolting-cloth. 
DETAILED DESCRIPTION OF THE COLLECTION. 
1. This gathering consisted of the contents of one haul of the tow-net, 
collected at the surface at ‘ Jackal Station No. II.,’ lat. 61°45’N. long. 
0°59’W., on July 30th, 1896, at 10 a.m. (net down 15 minutes), The 
total contents’ were equal to about 9 c.c., of which 0°75 c.c. consisted 
of flocculent matter (Diatoms, Infusoria, Ceratiwm, etc.), the remainder 
being composed of larger organisms, chiefly Entomostraca. The plant 
plankton has been described by Professor Cleve (p. 297). The fol- 
lowing organisms were observed by me :— 
Calanus finmarchicus (Gunner). Acartia Clausii, Giesbrecht. 
Pseudocalanus elongatus, Boeck. Oithona (*%) similis, Claus. 
Temora longicornis (Miller). Podon intermedius, Lilljeborg. 
ae . . 
The number of Entomostraca in this gathering was, approximately, about 
3500, and for every 26 Calan there were about 6 Pseudocalani, 32 
% 
Temore, and 200 Acartix, while Oithona and Podon were very rare. 
2. This gathering consisted of the contents of one haul of the tow-net, 
collected at the surface, at the same station as above, and on the same 
date, at 1 p.m. (net down 15 minutes). The total contents measured 8°75 
e.c , of which about °75 c.c. consisted of flocculent matter. The following 
organisms were observed :— 
Calanus finmarchicus (Gunner). Acartia Clausti, Giesbrecht. 
Pseudocalanus elongatus, Boeck. Oithona (*%) similis, Claus. 
Centropages typicus, Kroyer. Podon intermedius, Lilljeborg. 
Temora longicornis (Miller). Parathemisto (%) gracilipes, Norman. 
Eucalanus elongatus (Dana). Limacina retroversa (Fleming). - 
The number of Entomostraea in this gathering we about the same as the 
last, and the proportion of species was also similar. ‘There were only 
one or two specimens of Parathemisto and of Centropages, and one 
specimen of Hucalanus. Limacina was very rare. 
3. This gathering consisted of the contents of one haul of the tow-net, 
collected at the surface, at the same station as the other two, and on the 
same date, at 3 p.m. (net down 15 minutes). 
The total contents of this haul measured 10 c.c., about 1 c.c. consisting 
of flocculent matter. The following organisms were observed in this 
gathering :— | | 
Calanus finmarchicus (Gunner), Acartia Clausit, Giesbrecht. 
Pseudocalanus elongatus, Boeck. Oithona (*%) similis, Claus. 
Hucheeta norvegica, Boeck. Podon intermedius, Lilljeborg. 
: ee longicornis (Miller). Parathemisto (%) gracilipes, Norman. 
U 
