8 Dr. B. Lysholm and O. Nordgaard. 
water from the Norwegian Sea. In determining the copepoda 
from the Michael Sars expedition in 1910, we found that this 
species was widely distributed in the deeper layers of the Atlan- 
tic. In the bottomwater of the greather Norwegian fjords, C. 
hyperboreus is an arctic relict from the glacial period, as we have 
found developmental stages together with the adults. The species 
is endemic, as the bottom-water in the greater Norwegian fjords 
is renewed by the Atlantic current, the biological facies of which 
is of course Atlantic, not Arctic. Together with many other 
planktonic and benthonic animals C. Ayperboreus has adapted 
itself to the recent hydrographical conditions in the bottom-layers 
of the said fjords. 
3.  Megacalanus princeps wOLFENDEN. 
Macrocalanus longicornis G. O. SARS, C. R. P. A. 1, p. 7. 
Megacalanus longicornis v. BREEMEN. C. N. P., p. 13, fig. 9. 
Megacalanus princeps C. WITH, C. D. IL, p. 41, text-figs. 8 a.—d, pl. 1, figs. 
3 a—i. St 5, 1000 m. wire, r; St. 7, 1000 m. wire, r; 
St. 9, 1000 m. wire, r; St. 11, 1000 m. wire, r. 
Distribution. This species is widely distributed as a deep- 
water form in the Atlantic, and was also taken by the Siboga 
expedition in the Indian Ocean.” By the Thor expedition 
1904—1905 it was captured at several stations south and west 
of Iceland’). 
Remarks. We are inclined to think that the occurrence at 
the Thor stations south and west of Iceland is owing to an under- 
current of Atlantic water. It has not hitherts been recorded from 
the Norwegian Sea, and will scarcely be so, as the ridges between 
the two ocean basins are quite high, and there is a southward 
flow of cold water over the ridges. 
ah 
4. Euealanus elongatus DANA. 
Eucalanus elongatus GIESBRECHT, P.C. G. N., p. 131, 149, pl. 11, 35. 
= v. BREEMEN, C. N. P., p. 14, fig. 10. 
2 C. WITH, C. D. I., p. 48, text-figs. 
9 a—i, pl. 1, figs. 5 a—d. 
DNB SCOTE YC. S. Ep 
*) C. WITH, C. D. I, p. 44. 
