44 P. T. CLEVE. PLANKTON, COLLECTED BY THE SWEDISH EXPEDITION TO SPITZBERGEN. 



Surf ace : 



Uate. 



Lat. N. 



Long. 



Temp. 



Sal. 



Fq. 



Pl. 



9 VI 



70° 54' 



20°43' E. 



7,15 



34,83 



c 



CS 



31 VII 



77=14' 



6°34' E. 



. 5,35 



34,77 



c 



S 



1 VIII 



76° 36' 



12° 8'E. 



7,38 



35,12 



+ 



ST 



29 VIII 



77° 38' 



11° 40' E. 



6 



34,89 



)• 



rs 



29 VIII 



77° 23' 



10° 53' E. 



5,55 



35,03 



c 



rti 



30 VIII 



77 



8° 3'E. 



5,65 



35,03 



c 



s 



30 VIII 



76° 45' 



8° 45' E. 



5,34 



34,92 



c 



s 



31 VIII 



76° 27' 



10° 43' E. 



5,35 



35,03 



cc 



s 



2 IX 



75° 24' 



16°47' E. 



5,64 



35,12 



+ 



ns) 



Corethrou hystrix Hensen. — This species is probably identical with C. criophilum 

 Castr. from the Antarctic Ocean. According to a recent publication of Dr. Leudugee 

 FoRTMOREL * this species occurs West of Africa in the region of Cape Verde together with 

 Chcetoceros scolopendra Cl. (= C. spinosum Leud.). Both are found also by me in a 

 gathering (March 1898) from the same region. In March and April 1898 this species 

 was found, besides, in the region of the Canaines and from the Azores to the mouth of 

 the English Channel, in June and July around the Shetlands. In case C. hystrix be 

 identical with C. criophilum this form goes thus, following the western coast of Africa, 

 from the Antarctic to the Arctic region. It has also (once in March 1898) been seen 

 North of the South American coast, but not in the intermediate region of the Sargasso Sea. 

 The Corethron hystrix, although in general of rare occurrence, is a species of considerable 

 interest and belongs evidently to the styliplankton. 



Surface : 



Date. 



Lat. N. 



Long. 



Temp. 



Sal. 



Pq. 



PI. 



29 VIII 



77° 38' 



11° 40' E. 



6 



34,89 



rv 



Tä 



29 VIII 



77° 23' 



10-53' E. 



5,55 



35,03 



r 



rs 



31 VIII 



76° 26' 



10° 43' E. 



5,35 



35,03 



r 



s 



ILX 



76° 2' 



13° 8'E. 



6,61 



35,13 



c 



S T 



2IX 



75° 24' 



16° 47' E. 



5,64 



35,12 



. v 



T{S) 



6 IX 



70° 23' 



20° 32' B. 



9,87 



34,41 



r 



Tp Nä 



Coscinodiscus ociilns iridis Ehb. 



Surface : 



Date. 



Lat. N. 



Long. 



Temp. 



Sal. 



Fq. 



Pl. 



Date. 



Lat. N. 



Long. 



Temp. 



Sal. 



Fq. 



P). 



30 V 



63° 13' 



5° 15' E. 



8,17 



34,53 



r 



Tp Ns 



23 VI 



77° 15' 



27°10'E. 



0,97 



33,15 



c 



er 



10 VI 



71° 10' 



21°31' E. 



6,71 



35,20 



+ 



GS 



3 VIII 



7r4(i' 



26°18'E. 



1,23 



30,98 



+ 



C{Ncj) 



12 VI 



73° 40' 



22° 40' E. 



2,40 



35,05 



r 



C 



15 VIII 



78° 38' 



34°30' E. 



1,52 



32,21 



r 



c 



23 VI 



77° 25' 



27° 30' E. 



— 0,35 



32,97 



+ 



— 



16 VIII 



78° 27' 



32° 30' E. 



1,52 



33,46 



v 



c Ng 



23 VI 



77° 15' 



27°10'E. 



0,97 



33,15 



+ 



— 



2 IX 



75° 50' 



15°32' E. 



5,52 



35,01 



r 



TS 



* Diatomées marines de la cöte occidentale d'Åfi'iqiie. S:t Brieux 1898. 4:o. 



