KONGL. SV. VET. AKADEMIENS HANDLINGAR. 



HAND 



34. 



\:<> 



3. 



As derivcd from thc temperate Atlantic I considcr the following species: 

 Oithona plumifera BAIRD, ;it 70 31' N. '21 18' W. Acanthonia tetnmojxi .1. MCillkk. Very rare al 



extremely rare. 73 42' N. 19' 55' \Y. 



O. similis Claus, as the preceding, Litholophus ligurinus IIkl. as tlic preceding. 



In the region of the E. Greenland some cleep sea hauls were carried ont from the 

 depths of 180 to 280 mel res. The plankton ihns obtained was a decidedly arctic one, 

 as will be scen from the following list. But there occurred also, although very sparingly, 

 some southern forms as Oithona similis, Microsetella atlantica, Collozoum inerme, Litholophus 

 ligurinus and Globigerina. 



Dtite 



Lat. N. 



Lon g. W. 



Depth . 



Temperature 



Sal i nit y. 



Euthemisto libellnla Mandt 



Pnrathemisto oblivin Khöyer 



Borcophausia inermis Kröyer (fide G. O. Särs) . . 



Calanus finmarchicus Gunn 



C. hypeiboreus KröYGER 



Chiridius armatus BoECK 



Eucbaeta norvegica BoECK 



Metrldia longa Lubb 



Microsetella atlantica Brady & Robt 



Oithona similis Claus 



Oncaea conifera Giesbr 



O. minuta Giesbr 



Pseudocalanns elongatns BoECK 



Conchoecia borealis G. O. Särs (fide G. Andersson) 

 C. elegans G. O. Särs (fide G. Anderrsson) . . . . 



Clione limacina Phipps 



Limacina helicina Phipps 



Krohnia bamata Moeb 



Sagitta arctica AuRIV 



Aglantha digitale Fabr 



Botryopyle sel osa Cl 



Collozoum inerme J. Mull 



Litholophus ligurinus Hkx 



Globigerina (pachyderma) 



Chsetoceros atlanticus Cl 



C. borealis Btw 



C. criophilus Castr 



C. decipiens Cl 



Coscinodiscus oculus iridis Ehb 



Eucampia grönlandica Cl 



Fragilaria oceanica Cl 



Rhizosolenia semispina Hensen 



Thalassiosira gravida Cl 



74° 15' 



18° 15' 



280 



cc 

 c 



+ 

 r 

 c 



24 



72° 28' 



21° 48' 



180 



rr 

 rr 



r 

 cc 



c 



r 

 c 

 rr 

 r 



rr 

 rr 

 rr 

 rr 



r 



+ 



27' 



71*30 



VI 



50 



1,65 



33,61 



71 :;o 



21° 



200 



-1,0 



34,59 



rr 

 rr 



71° 30' 



21 



225 



•0,54 



34,71 



r 

 c 

 c 

 rr 



+ 

 r 

 r 

 rr 

 rr 



rr 

 r 

 rr 



rr 

 rr 



7i:;u 



21° 



260 



0,1 



33,01 



c 



f 



r 

 c 



r 



rr 

 r 



Surface sterile. — There were found in some samples rare specimens of a large Oikopleura. 



