Copepoda. 3 
0-30 m.| 50 m. | 100 m. | 150m. | 400m. 600 m. |1000 m. 1300 m. 
St. 1 c c c c | 
- C | | 
JE | c Be 
ST Cc C C 
5 c | c E r 
» 11 c | c c 
» 14 | C C 
Remarks. 6.0. sars') has separated C. helgolandicus cLaUus 
from C. finmarchicus Gunnerus and considers the range of the 
former to be more southern than that of the later. 
The 
OCCUT- 
rence of two nearly related forms of this widely distributed cope- 
pod is an interesting fact, but the characters of C. helgolandicus 
are not so constant that separation can in every case be effected. 
Thus we think it most convenient to employ the name of Gunnerus 
for both forms. 
Calanus hyperboreus. 
2. Calanus hyperboreus KRØVER. 
— » — 
— > == 
— » — 
G. O. SARS, 
v. BREEMEN, C. N. P., p. 8, fig. 3 a—b. 
C. WITH, C. D. I. p. 30, text-figs. 6 a—b, pl. 1. 
GIESBRECHT, P. C. G. N. p. 91, pl. 6—8. 
ANGNSN pir id. på 5. 
figs. 1 a—d. 
0-30 m. 50 m. 100 m. | 150 m. | 400 m. | 600 m. 1000 m. 1300 m. 
pt... | 
ap: | 
> iD | r r 
maT ar En i 
» 9 r r | r 
» 11 r C | 
> 14 | 
Distribution. 
the Atlantic. 
Remarks. 
1 
| 
The Arctic ocean and the adjacent parts of 
The occurrence of this arctic copepod at the sta- 
tions above mentioned is owing to an under-current of arctic 
) A. GN: pi 11, pl. 14. 
