inferiority in number, size. Ac. On account of the importance of 

 light to the vegetable plancton world, the quantity of food, in 

 summer at any rate, will be greatest in the surface strata; conse- 

 ,uently a certain species will here ti.,,1 the best conditions of life, 

 if the star there is not rendered impossible by the physical con- 

 ditions. In this connection I should also mention that for instance 

 nlintu hyprbows from the surface of the sea at Jan Mayn had 

 tery red coloured antenna?, while those of specimens from Bergen 

 anl Lofoten were colourless. 



The arctic copepods, r. kyperbamu, metridia lo, t ga, euchata 

 monvgtca. heterocha-ta norregica, seem to occur at our coast through- 

 out the year, and their occurrence need not at all be dependent 

 on transportation by arctic currents. When, on the contrary, such 

 animals as elio borealis and limacina helicina, on rare occasions 

 occur in our waters (according to statements by BOECK and SARS), 

 me to support the opinion that some times arctic cur- 

 rents force their way up to our coasts. 



I .ve mentioned above that the winter plancton is rather 

 poor. There may, however, even in the month of February in 

 Lofoten occur rather many forms As an instance of this, I give 

 a list of the contents of the samples from Liland (Ofoten-fjord) 

 and Tjeldsundet. The diatomace*, dinoflagellata, tintinnodea, &c. 

 have been determined by Mr. JORGENSEN of Bergen. 



Liland, Tjeldsundet, 



Febr. 24th 1897. Febr. 24th 1897. 



Copepoda. 



Calanus finmarchicus, Gunn 



hyperboreus, Kreyer 



Metridia longa. Lubb 



Euchseta norvegica, Boeck 



Oithona similis. Claus 



Microsetella atlantica, Brady & Rob.. 



Larva? of copepods 



ChaHognatha 



0300 m. 



Diatomaceae. 



dHBtoceros boreale. Bail 



criophilum. Castr 



decipiens, Cl 



diadema, (Ehrb.) Gran . . . 



Coscinodiscus radiatus. Ehrb 



oculus iridis. Ehrb 



concinnus. W. Sm 



Mriatt-lla unipunctata, Ag 



Skeletonema costutum. (Grev.) Cl. 



< 'ampylodiscus Tlmretii, Breb , 



Navicula latissima, Greg 



Thalassiothrix longisHima, Cl 



r 

 c 

 c 

 r 

 r 



rr 

 rr 

 r 

 r 

 r 



rr 

 rr 



0200 m. 

 c 



rr 

 rr 



r 

 rr 



r 

 r 



Dinoflagellata. 



Ceratium tripos, (0. F. Mull.) Xitzsch. -f 

 v. bucephalus. Cl -j- 



Liland, 

 Febr - 24th 1897 



~~ 300 m- 

 V ' m * croceros ' < Ellri -) ( ''P- et Lachm - r 



T< Rr JcUS ' (Ehrb ' ) Clap " et Lachm - 



C ' fuSU8 ' ( r 



IVn<] " mim d'vergons. Kl.rb .......... 



pellucidum, (Bergh) Schiitt. 



Gon y aul 8 P inifera ' ( Cla P- et Lac '-) 



veRica ' Cla P" 

 acuta, Ehrb ............. 



Tintinnodea. 

 Amphorella subulata) (Ehrb-) Dad .. rr 



Tra^o-o^ nitida, Brandt . r 



beroiclea, Stein. . 

 Cvttarocylis denliculata, (ClapetLachm.) 



y ^ (Brandt) 



t i . 



Ptvchocvlis urn ula',' (Clap'.'et' Lachm.) 

 t> . i f 



Febr. 24th 1897. 

 0200 m. 



r 

 r 



r 



r 

 r 



r 

 rr 



Challengeria tridens, Hck 

 Acantharia, sp 

 Eucecryphalus, sp 



Chlorophyceae. 

 Halosphsera viridis, Schmitz 



r 



-f- 

 rr 



-(- 



r 



-f 



-\- 



f 



The signs above, as well as in the tables, have the following 

 signification : 



rr very rare 



r rare 



4- rather common 



c common 



cc very common 



After the above was in the hands of the printer, I had an 

 opportunity of seeing the great work of dr. VANHOFFEN on "Die 

 Fauna und Flora Gronlands"*). I see there that VANHOFFEX in 

 Karajak-fjord has found the male of calanus hyperboreus as well as 

 the male (one specimen) of Iwtcrochceta norvegica. The total length 

 of the latter was 3.57 mm., it was consequently a little bigger than 

 my specimen. VANHOFFEN also emphasizes the likeness with h. abi/s- 

 xalif, Giesb. I am, however, inclined to suppose them to be two 

 different species, and I also suppose that the identity of the h. 

 -fin if nn8 described by BRADY and h. non-egica, cannot be main- 

 tained with certainty. 



*) Gronlandn-Expedilion der GesellxcliRft fur Erdkunde zu Berlin, 1891 

 1898, unter Leitung von Erich von DrygaUki. 



