78 



320. Temora longicornis. (Muller). 



Sammen med de 2 foregaaende Arter og desuden ob- 

 serveret paa Stat. 124. Deu er en af de ved vor Syd- og 

 Vestkyst allerhyppigst forekommende Oalanoider og har en 

 lignende Udbredning som foregaaende Art. 



321. Diaptomus castor, Jurine? 



En eiendommelig Varietet af denne Form (eller maaske 

 en egen Art?) observeredes under Expeditionen i Fersk- 

 vandsansamlinger ved Vardø og Hammerfest. Arten er ud- 

 bredt over hele Europas Fastland og de britiske Øer, 

 væsentlig kun forekommende i mindre Tjern og Damme. 



Trib. 2. Harpadoidea. 



Pam. Dactylopidæ. 



322. Thalestris Krohnii, (Kroyer). 



(= Thalestris serrulatus, Brady). 



Denne meget eiendommelige og let kjendelige Art, 

 der i Modsætning til de øvrige Harpactoider synes at være 

 et ægte pelagiskt Dyr. blev under Expeditionen antruffet 

 paa 2 forskjellige Stadioner i det aabne Hav. Af disse 

 ligger den ene (Stat. 26) udenfor Storeggen, den anden 

 (Stat. 262) i Havet Øst af Vardø. Jeg har tidligere tåget 

 den i Varangerfjorden, ogsaa her i Vandskorpen og i længere 

 A f stand fra Land. Arten er meget kjendeligt afbildet af 

 Kroyer under Benævnelsen Harpadicus Krohnii i Atlas til 

 „Gaimard's voyage en Scandinavie"; men da ingen Text tindes, 

 kan det ikke afgjøres, fra hvilken Lokalitet det af Kroyer 

 afbildede Exemplarer hidrører. Brady's Art, Thalestris 

 serrulatus, er utvivlsomt identisk med nærværende Form. 



320. Temora longicornis, (Muller). 



Tåken 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 peeuliar variety of this form (or maybe a distinct 

 species?) was observed on the Expedition in freshwater 

 Iakelets near Vardø and Hammerfest. The species is dis- 

 tributed over the whole continent of Europe, including 

 the British Islands, principally occurring in small tårns 

 and ponds. 



Trib. 2. Harpadoidea. 



Pam. Dactylopidæ. 



322. Thalestris Krohnii, (Kroyer). 



(= Thalestris serrulatus, Brady). 



This very peeuliar and easilv distinguishable species, 

 which, in contradistinction to other Harpactoidians, would 

 appear to be 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 Vardø. I had previ- 

 ously tåken the species in the Varangerfjord, near Vadsø, 

 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;"' hut as no text is appended, we cannot with certainty 

 determine from what locality the specimen represented by 

 Kroyer was obtained. Brady's species. Thalestris serrulatus, 

 is unquestionably identical with the present form. 



