78 
320. Temora longicornis, (Miiller). 
Sammen med de 2 foregaaende Arter og desuden ob- 
serveret paa Stat. 124. Den er en af de ved vor Syd- og 
Yestkyst allerhyppigst forekommende Calanoider og har en 
lignende Udbredning som foregaaende Art. 
321. Diaptomus castor, Jurine? 
En eiendommelig Varietet af denne Eorm (eller maaske 
en egen Art?) observeredes under Expeditionen i Eersk- 
vandsansamlinger ved Vardp og Hammerfest. Arten er ud- 
bredt over hele Europas Eastland og de britiske 0er, 
vsesentlig kun forekommende i mindre Tjern og Damme. 
Trib. 2. Harpadoidea. 
Fam. Dactylopidse. 
322. Thalestris Krohnii, (Kroyer). 
(= Thalestris sermlatus, Brady). 
Denne meget eiendommelige og let kjendelige Art, 
der i Modssetning til de pvrige Harpactoider synes at vmre 
et segte pelagiskt D}*r, blev under Expeditionen antruffet 
paa 2 forskjellige Stationer i det aabne Hav. Af disse 
Jigger den ene (Stat. 26) udenfor Storeggen, den anden 
(Stat. 262) i Havet 0st af Vardp. Jeg har tidligere taget 
den i Varangerfjorden, ogsaa her i Vandskorpen og i kengere 
Afstand fra Land. Arten er meget kjendeligt afbildet af 
Kroyer under Benaevnelsen Harpadicus Krohnii i Atlas til 
,.Gaimard's voyage on Scandinavie”; men da ingen Text findes, 
kan det ikke afgjpres, fra hvilken Lokalitet det af Kroyer 
afbildede Exemplarer hidrorer. Brady’s Art, Thalestris 
serrulatus, er utvivlsomt identisk med nservserende Eorm. 
320. Temora longicornis, (Muller). 
Taken along with the 2 preceding species, and also 
observed at Station 124. It is one of our commonest 
forms of the Calanoid group, and has the same distribution 
as the preceding species. 
321. Diaptomus castor, Jurine? 
A peculiar variety of this form (or maybe a distinct 
species?) was observed on the Expedition in freshwater 
lakelets near Vardp and Hammerfest. The species is dis- 
tributed over the whole continent of Europe, including 
the British Islands, principally occurring in small tarns 
and ponds. 
Trib. 2. Harpadoidea. 
Fam. Dactylopidse. 
322. Thalestris Krohnii, (Kroyer). 
(= Thalestris scrrulatvs, Brady). 
This very peculiar and easily distinguishable species, 
which, in contradistinction to other Harpactoidians, would 
appear to lie a true pelagic animal, was met with on 
the Expedition at 2 different Stations in the open sea. 
Of these, one (Stat. 26) lay off the Storeggen Bank, the 
other (Stat. 262) in the sea east off Vardp. I had previ- 
ously taken the species in the Yarangerfjord, near VadsO, 
and here, too, at the surface of the water, a considerable 
distance from land. The species has been very recognizably 
figured by Kroyer, under the appellation of Harpadicus 
Krohnii, in the Atlas to “Gaimard’s Voyage en Scandi- 
navie;” but as no text is appended, we cannot with certainty 
determine from what locality the specimen represented bj 
Kroyer was obtained. Brady’s species, Thalestris serrulatus, 
is unquestionably identical with the present form. 
