CRUSTACEA MALACOSTRACA. IV. 55 



captured six times; the Ilnd Amdrup-Expedition gathered it at ab. Lat. 74°28'N., Long. I5°36' W., no 

 fath., and in Hurry Inlet, Lat. /0°5o' N., 50 fath. Ohlin recorded it from Lat. 70°43' N., Long. 22°29'\Y., 

 Scoresby Sound, 37 fath.; Lat. 72°28' N., Long 21 "48' W., 95 fath., and Lat. 74°52' N., Long. I7°i6'W., 

 186 fath. Finally taken by the Due d'Orleans near Lat. 75°58' N., Long. i4 : o8' W., 159 fath. 



Distribution. Found in some parts of Kattegat, common in both Belts and also going through 

 the Sound to the Baltic, where it has been taken in the Bay of Kiel, off Bornholm and eastwards to Gotland 

 (various authors); it occurs generally in the deeper tracts of the named areas, is rare in 7 — 8 fath., ^though 

 yet found in 3 1 / 2 fath. In Skager Rak it was secured several times in 35 to no fath., but also taken in ab. 

 220 and 350 fath. (H. J. Hansen). It occurs along the whole coast of Norway, generally in 10 to 30 fath. 

 (G. O. Sars), was taken between Greenland and Spitzbergen at Lat. 8i°oo' N., Long. i°oo' E., 540 fath. 

 (G. O. Sars), and a few times at western and northern Spitzbergen, northwards to Lat. 8i°2o' N., in depths 

 from 80 to 531 fath. (Sars, Ohlin, Zimmer). Furthermore it was recorded from Franz Joseph Land (Heller, 

 Th. Scott), from places in the Barents Sea, 60 and 120 fath. (Hoek, Stuxberg), from places at the west and 

 south coasts of Novaya Zemlya, Matotschkin Schar and Jugor Schar in depths from 4 — 10 fath. and down 

 to 30 — 70 fath. (Stuxberg, Stappers) ; from several places in the Kara Sea in depths from 3 to 60 fath. (Stux- 

 berg, H. J. Hansen), besides in the Sibirian Ocean at Long. 7S°4o' E., 26 fath., at Long. 8o°58' E., 5 fath., 

 and at several places between Cape Tchelyuskine and Long. I73°24' W., near Bering Strait, 3 to 12 fath. 

 (Stuxberg). 



G. O. Sars recorded this species from two stations in the cold deep sea area west of Norway, viz. 

 Lat. 69°46' N., Long. i6°i5' E., 649 fath., temp. ~ o.j°, and Lat. 62°44' N., Long. i°48' E., 412 fath., temp. 

 -M.o°. It is common in the North Sea southwards to the Belgian coast ; has been found at places on the eastern 

 and western coast of Scotland and England and at the south coast of Devon and Cornwall (various authors), 

 but is unknown from the west side of Ireland (Caiman). It has been taken at Port Kennedy (Bate, as D. 

 borealis), at five places at the east coast of Baffin Land between Lat. 73°43' N. and Lat. 7i°42' N. in 5 — 10 

 and down to 10 — 28 fath., and at Lat. 66°33' N., 6 fath. (Ohlin) ; in places at Labrador in depths from 7 to 

 50 fath.; at some stations off Halifax and the east coast of America southwards to Lat. 4i°n 1 / 2 'N. , 20 

 to 499 fath. (S. I. Smith; Caiman); finally at Point Franklin on the east side of Bering Strait (Murdoch), 

 and at a number of places at Alaska and the Aleutian Islands southwards to Sitka, in depths from 5 — 7 and 

 down to 15 — 20 fath. (Caiman). 



The distribution of this species is very interesting. It is really circumpolar and goes southwards 

 to the southern coast of Cornwall; it is generally found in depths from 10 to 50 fath., but has been taken in 

 3 fath., and several times in depths from 300 to 649 fath. Furthermore it seems rather independent both 

 of salinity and temperature, because it goes far eastward in the Baltic and has been captured not only in 

 300 to 582 fath. at stations belonging to the warm area, but also by Sars and the "Ingolf" in 412, 471 and 

 649 fath. at stations belonging to the cold deep-sea area 1 . Extremeh- few, if an} - , other species of Malaco- 



1 Here a special point may be mentioned. Ohlin imputes me to have committed an error in 1888 in saying that 

 D. Rathkii had been recorded by Norman from the entrance of Davis Strait, 1750 fath., but I said that D. Rathkii had been 

 taken at West Greenland in every depth down to 410 fath., the greatest depth where dredging had been undertaken, excepting 

 that by Xonnan in 1750 fath. Consequently I did not include 1750 fath. as a locality for this species! 



