294 I)IAT0:MACE.K CHiKTOCEROS 



Plankton-type. I have found this species in phinkton fioiii 

 Jedo l>ay, Japan. It seems to inhabit the fjords on the soiilh 

 side of Iceland and the region of the Newfoundland }3anks. It 

 occurs only occasionally in the ocean. Common in the Skagerak 

 (winter). — Ns. 



CH^TOCEROS CONTORTUS Schutt. 



(Ber. (1. Deutsch. Bot. Gesollscli. Vol. XIII, 1895. I'ag. 42. 



1898 M((i-rh: 58^ N. 6- E. (common); ~r N. 55' W. 

 April: 89' N. 24' W. 



May. 49' N. 2(r^ W. 



Jiitie: 64' N. 22^ W. to fiB' N. 18' W.; 10' N. 58' W. 



(abundant). 

 Jiihi: ()5' N. 14' W. 

 Aiujiist: Faroes. 

 Si'ptcii ibcr: A zores. 

 November: 4-jS^ N. 50' \V. (not rarej. 

 Dcrenibc/': 45^ N. 52' W. (not rare) to 42' N. 08' W. (rare. 



1899 Apt-i/: 48' N. 9^ W. (common); 46" N. 18' W. (rare). 

 Maj/: Westmannao; Faroes (rare); 58' N. 4" — 7' E. 

 June: Westmannao (rare). 



Scpfcinbc/-: 75' N. 18' E. 



Temperature: 9.-, mean of 16 obs., max. II, min. 4.-. (for tlu- 

 northern Atlantic only). 



Salinity: 84.^8, mean of 15 obs., max. 85. 7.^, min 82. .-,i, (for the 

 northern Atlantic only). 



Plankton- type. This species seems to be a neritic form, 

 occurring both in boreal and tropical regions. — .Vs (NtY). 



