Report on the Malacostraca, Pycnogonida and some Entomostraca. 575 



taken in Davis Strait just on the south side of the ridge: 65"35' N., 

 54°50' W., 80 fm. and 66°32' N., 55 34' W., 100 fm. 



Nymphon elegans has been found in Baffins Bay: 72 40' N., 57° 

 15' W., 118 fm. (Meinert "Ingolf"); it is also distributed over the cold 

 area and goes eastwards to the Kara Sea (H.J.Hansen "Dijmphna"); 

 depth 30 — 1350 m. ("Fauna arctica'). Meinert ("Ingolf") gives a loc- 

 ality from the Davis Strait: 63°15'N., 25°20' W., 270 fm.; this locality 

 is remarkable, as it lies S. of the ridge between Iceland and Greenland. 



Boreonymphon robustiim has been found in arctic America (Bell, 

 Miers) and at W. Greenland: 66=16' N., 55"20' W., 327 fm. (Meinert 

 "Ingolf". Meinert gives 25^20' W.. but this must be 55°20' W., as he 

 states that the locality lies in the Davis Strait). E. Greenland : 66° 

 18' N., 25°59'W., 330 fm., —0.75° C.; 70°26' N. (this is probably the 

 same as H.J.Hansen 1895 gives as Scoresby Sound 5 — 25 fm.) (Mei- 

 nert 1. с); 72 26' N., 19°35' W., 105 fm., 72°53' N., 20 36' W., 96 fm. 

 (H. J. Hansen 1895). Further, in the cold area and eastwards to the 

 Kara Sea (H.J.Hansen "Dijmphna"). — 



As already mentioned, some of the arctic deep-water Malacostraca 

 go into the Kara Sea, or are even found north of Siberia, so that 

 they are possibly circumpolar. It seems also, from all that we 

 know, that the arctic deep-water Malacostracan fauna is a well- 

 defined group, the species of which are not as a rule found south 

 of the ridges, if we exclude the Norwegian Channel; the number 

 of species occurring in this region are indeed not few (Bythocaris 

 simplicirostris, Stegocephalus inflatus, Halice abyssi, Aceros phyllonyx, 

 Acanthozone caspida, Leptamphopus longimanus (?J, Neohela monstrosa, 

 Aeginella spinosa, Sphyrapus anomalus), some indeed right to Bohuslän. 

 Unfortunately, the deep part of the Channel in the Skager Rak is 

 as yet very badly investigated; but there is much to indicate, that 

 we find here remnants of an arctic fauna, yet mixed with a number 

 of Atlantic deep-water species. In "Havbundens Dyreliv" in "Norsk 

 Havfiske" (Norges Fiskerier I, 1905) p. 72 — 73, Appellöf notes various 

 species from the Norwegian Channel, which elsewhere have their 

 northern boundary much further to the north, but he says nothing 

 as to the origin of the fauna; he writes later however (I.e., p. 115): 

 "That larvae, which come into a boundary region between two 

 currents, may be carried over into the one or the other of these 

 and in this way be brought into a region to which they do not 

 really belong, may be taken as certain, to judge from what we 

 otherwise know regarding pelagic animals, and it is thus a question, 

 how far they can adapt themselves to the new conditions or perish. 

 In the same way I explain the occurrence of the arctic Amphipoda 

 Epimeria loricata and Acanthozone cnspidata far south in the Norwegian 



