KONGL. SV. VET. AKADEMIENS HANDLlNGAfi. BAND 32. N:0 3. 



15 



4. Station P. August Ith. Lat. 76° 36' N. Long. 12°13'E. 



a. Haul 25 — O m. Temp. at O m. 7,i, at 25 m. 5,8. Sal. at O m. and at 25 m. 

 35,12. Styliplankton and trichoplankton as west of Spitzbergen. 



h. Haul 50 — O m. Terap. at 50 m. 4,98. Sal. 35, i3. Similar to a. 



c. Haul 100 — O m. Temp. at 100 ra. 3,75. Sal. 35,05. Similar to a. 



d. Haul 500 — O m. Temp. at 500 m. 2,5. Sal. 35, lo. As a, but contained some 

 radiolarians, as Artrotrobus annulatus, Dictyopliimus gracilipes, Acanthocorys umbellifera. 



5. Station S. Aug. 20th. Lat. 81° 14'. Long. 22° 50' E. 



a. Haul 10 — O m. Temp. at O m. 0,38, sal. 32,49. Temp. at 10 m. I,i8, sal. 33,42. 

 Plankton chiefly trichoplankton (most common: Chcetoceros borealis, C. hor. v. Brightwelli, 

 C- criophilus, Rhizosolenia obtusa and Thalassiosira gravida) and sparingly arctic neritie 

 plankton (Chcetoceiws diadema, Leptocylindrus danicus). 



b. Haul 25 — O m. Temp. at 30 m. 3,3. Sal. 34,4i. The same as a. 



c. Haul 130 — O m. Temp. at 100 m. 1,7, at 150 m. 1,98. Sal. at 100 m. 34,77, 

 at 150 m. 34,83. Plankton as in a, but some animals indicate the presence of styli- 

 plankton. 



6. 

 a. 

 foUowing; 



Station T. August 27th. Lat. 79°58'N. Long. 9° 35' E. 

 Haid 10 — O m. Temp. at O m. 4,58. S. 34,53 



This gathering contained the 



Chsetoplankton. 



Choitoceros borealis r, 

 C. crioj)liilus c, 

 C. decipiens r, 

 Phceocystis Pouchetii -\-. 



Stjliplankton. 



Rhizosolenia gracillima -\~, 

 R. hebetata r, 

 R. styliformis r. 



Trichoplankton with northern and 

 arctio neritie plankton. 



Chcetoceros atlanticus r, 

 C. borealis r, 



var. Brightwellii -f-, 

 C. criophilus c, 

 C. diadema c, 

 C. teres r, 



Leptocylindrus danicus r, 

 Thalassiosira gravida c, 

 Dinohryum r. 



The plankton is thus constituted principally of trichoplankton with some arctic or 

 northern neritie plankton and contains a small amount of chseto- and styliplankton. 



b. Haul 100 — O m. Temp. at 100 m. 3,7. Sal. 35, 12. Plankton similar to a, 

 but contained besides Globigerina, Challengeria fridens, Plectophora arachnoides, which 

 indicate an increased amount of styliplankton. 



c. Haul 400 — O m. Temp. at 430 m. 1,5. Sal. 35,06. 



Similar to b but with some additional styliplankton-forms as Diplopsalis lenticula (rr), 

 Chcet. borealis var. solitaria (r), Chcetos. volans (r), Oithona plumifera, Onccea iiiinuta, 

 indicating an increased amount of styliplankton. This sample was examined for radio- 

 larians, of which several new forras were found. Araong known species were found 

 Challengeria Harstoni and Dictyophimus gracilipes as in the deep-sea haul at the station O 



