206 DIXOFLAGELLAT.^-. — AMFHISOLENIA 



April: 29' N. 38' AV. to Ki^ N. 56 W. and 12" N. 51' W.; 



Caribbean Sea. 

 May: 28^ N. 45^—4.7 W.; 16—20 N. 58^—54^ W.; Carib 



bean Sea; 41' N. 51' W. 

 Jiibi: Caribbean Sea; 40^' N. 67= W. 

 Augu>>r: 30' N. 74° W.; 40° N. 67° W.; 42° N. 50° W. 

 November: 19' S. 31° AV.; 4° N. 30' W.; 13° N. 27° W.; 



Azores; 36° N. 14° W. 

 Decriiibcr: Canaries; Azores to 34° N. il° W.; 22 \. 56 W. 

 1899 Jaiuiarij: Canaries to Gibraltar. 

 Frhruan/: 32° N. 46° W. 

 Jiuu-: 19° S. 1°W. 



Temperature: 24.45, mean of 65 obs., max. 28. i, min. 16.4. 



Salinity: 36.-:;, mean of 34 obs., max. 37.3?, min. 33.^0. 



Plankton-type: Occurs in the Red Sea, Indian Ocean and 

 Pacific. It belongs to the troi)ical Atlantic. It occurs in the Sar- 

 gasso Sea (December to June), in the Caribbean Sea and the Florida 

 current, in August to 42° N., and in December between the Azores 

 and the Canaries. — J). 



AMFHISOLENIA THRINAX Schutt.^ 

 (Pllanzeiilcben der Huclisee pa,u. 271 fig. SI.) 



1898 Jatuiarii: 32° N. 74° W. 



February: 13°— 15° N. 70^—71' W.; 27'— 25" iN. 41°— 44° W. 



Mar<-/r. 14° iN. 50° W.; 29°— 31° N. 45'— 42" W. 

 September: 40° N. 65° W. 

 Oetober: 21° S. 36° W. 

 Dcreinbcr: 30° N. 16' W. 



Temperature: 22..-,, mean of 8 obs., max. 27, min. 19.4. 



Salinity: 36. n, mean of 4 obs., max. 37. 21, min. 35. 51. 



Plankton-type. Found in the Pacific and Indian Ocean. It 

 rarely occurs in the tropical Atlantic, east and west, the Sargasso 

 Sea, the Caribbean Sea and the Florida current, where, in Septem- 

 ber, it reaches 40° N. — 1). 



Murray's i^ Whitlino's data used. 



