DINOFLAGELLAT^ — CERATIUM 225 



October: Azores; 42° N. 64°— 50° W.; 48° N. 29° W.; 57°— 



59° N. 27°— 21° W.; 60° N. 4°— 6° W. 

 November: 26°— 24° S. 30°— 29° W.; 5°— 0° N. 33°— 31° W.; 



Azores; 41°— 43° N. 69°— 61° W.; 48°— 50° N. 29°— 31° W ' 



49° N. 12° W. 

 December: 26° S. 45° W.; Azores; Canaries; 43° N. 61°— 



57° W. 

 1899 February: 32° N. 47° W. 



Marxh: 24° N. 70° W.; 36° N. 29° W.; 35° N. 16° W. 



April: 41°— 42° N. 15°— 18° W.; 49° N. 7° W. 



May: 35° N. 76° W.; 50°— 51° N. 33°— 20° W.; 60°— 61° N. 



4°_5° w.; 58°N. 5° E. 

 Jut2e: 20° S. 2° E. to 3° S. 20° W.; 62° N. 0° E. 

 July: 20° N. 34° W.; area between 33° N. 41° W., 45° N. 31° 



W. and 48° N. 35° W. 

 September: 77° N. 14° E. 



Tempepature: 19.8, mean of 168 obs., max. 28, min. 4^78. 



Salinity: 35.43, mean of 106 obs., max. 37.4o, min. 31.96. 



Plankton-type. This species occurs in the Red Sea, the In- 

 dian Ocean and the Bering Sea. In the Atlantic it has a very wide 

 range of distribution between America and Africa— Europe, at least 

 from 26° S., occurs from the winter to June in the Sargasso Sea 

 and the Florida Current, and in the western Atlantic between 40° 

 and 45° N., where it reaches its maximum in August. It occurs 

 at the Azores the whole year, spreads thence, in May, northwards, 

 at least to 50° N., in July to 60° N. It reaches in August S. Iceland 

 and goes thence across Denmark's Sound to E. Greenland. — S. (D.) 



CERATIUM TRIPOS VAR. LONGIPES Bail.^ 



ICl. Fifteenth annual report of the Fishery Board for Scotland, for 1896, pag. 302 



"fig.- 2 inclusive var. horrida Cl. 1. c. fig. 4. C. tfip. v. iergcstina Schutt. C. 



tripos car. arcticii AuRiv. p. p.) 



1898 March: Azores, very rare; 64° N. 25° W., very rare; 62° N. 

 2° E.; 58° N. 6° E.; 40° N. 71° W. 

 April: SW. and S. of Iceland; Faroes; Faroe Channel; 59° N. 

 28° W.; 60°— 62° N. 2^-9° W.; 39° N. 74° W., common. 



' Ostenfeld's data used. <■-•■- ■..-. 



15 



