ÖFVERSIGT AF K. VETBNSK.-AKAD. FÖRHANDLINGAR 1899, N:0 9. 859 



April. Between the Azores and Spain or at 41° N. 15° — 

 18° W. 



May. The Benguela current, from 29° S. 9° E. (rare) to 

 33° S. 16° E. (common). 



June. West of Africa, 20° S. 2° E. SW. of the Azores, 

 36° N. 30° W. 



Though I examined a larae number of samples from the 

 Sargasso Sea, the North Equatorial current, the Caribbean Sea, 

 the Antilles current and the Florida current, I never found a single 

 specimen of this copepod in the western Atlantic south of 40° N. 



On the other hand it was found in the Benguela current, 

 from Cape Verde to the Azores and Gibraltar, and it seems to occur 

 permanently at the Azores. Its occurrence in the region south 

 of the Newfoundland banks does not seem to me to be explained 

 by a drift with the Florida current or the Gulf-stream. 



Clausocalanus arcuicornis (Dana), 



This species occurs, like the preceding one, in the Benguela 

 current and has about the same geographical distribution, but 

 is much more abundant. It is a typical styli-plankton form, with 

 eastern distribution. 



1898 January. From the south of the Azores to the mouth 

 of the Channel (from 33° N. 31° W. to 48° N. 6° W.). 



February. Gulf of Guinea, 6°— 5° S. 12°— 9° E. 



March. The space between 32° N. 31° W., 48° N. 18° W. 

 and 40° N. 56° AV. 



April. The space between the Azores, 47° N. 8° W., 50° 

 N. 12° W. and 49° N. 22° W. 



May. The space between 38° N. 21° W., 43° N. 11 W., 

 49° N. 14° W., 50° N. 20° W. and 41° N. 60° W. 



June. The space between Madeira, 44° N. 16° W., 47° 

 N. 41° W. and 34° N. 33° W. 



July. The Azores. At 49° N. 22° W. Between 44° N. 

 39° W. and 40° N. 67° W. 



