CRUSTACEA MALACOSTRACA. III. 



}'. \idcntly common at Grinnell Land, having been taken there at four places from LaL 82*87* N. to 

 LaL 79*29' N. in depths not exceeding J fcth. (Miers). Through Smith Sound from LaL 78 e 24' N. south- 

 wards along West Greenland to Lat bs'i/N. ( "Ingolf Stat. 34) it has been taken many times (see 

 Stipluiisi-n's Conspectus), the depths north of Cape York being from near 10 to at most 50 fath, but 

 further south from 5060 to 220-280 fath. -- In the area between Iceland and the Feroes, and espe- 

 cially more or less near the last-named islands, the species has been taken many times, most frequently 

 in depths from 40 to 133 fath, but at Vestmanhavn in about 10 fath. (by Dr. Th. Mortensen), and 

 somewhat south-east of the Faeroes even in 620 fath., temp. -- 0-15 (by Cand. mag. Ad. Jensen); 5 

 miles east of Seydis Fjord, East Iceland, it was taken in 135 fath. by Admiral Wandel, and more east- 

 ward in 299 fath., temp. -f- 0-3, by G. O. Sars. 



At East Greenland it has been taken by the 1st Amdrup Exp. near Tasiusak, LaL 6537' N, 

 in 15-20 and 20-30 fath.; by the Ilnd Anidrup Exp. at Henry Land, LaL 6o34' N, 20 fath., and in 

 Hurry Inlet, LaL 7O5o' N, 50 fath.; by the Ryder Exp. in Scoresby Sound, LaL 70 7i3o'N, 525 

 fath.: in LaL 7226' N., Long. i935'W., 105 fath., and in LaL 7253' N, Long. 2O36' W., 96 fath ; by 

 the Danmark Exp. at a number of places from LaL 764o' N. to LaL 7645' N. in from 8-10 108090 

 lath, and at LaL 77 N, Long. i8'/, W. on Antedon prolixa (Stephensen), finally by the Duke of Or- 

 UMUS in Lat. 77 35'/' N., Long. i8i2 ( W., 28 fath. (Grieg). 



Distribution. Between the Faeroes and Norway, 412 fath., temp, -5- ix>, and west of Spits- 

 bergen, 416 fath., temp. 0-8 (G. O. Sars). At Ellesmere Land it has been taken near Cape Faraday, 

 5-10 fath. (Ohlin), and by the Ilnd Fram Exp. (G. O. Sars); at two places at the west coast of Baffin 

 Bay in 1028 fath. (Ohlin), finally in Arctic America at Beechey IsL, ab. Long. 91 W. (Sabine). 



It may be seen that A. Baffini sometimes occurs in less deep places, down to 610 fath, of the 

 cold area, and the lowest temperature recorded is 4- ri, in Northern Stromfjord. West Greenland 

 (Stephensen); but it has also been found in places with the temperature considerably above zero, 

 thus in 5-3. 



135. Arcturus scabrosus Nonnan. 

 1904. Ardurus scabrosus A. M. Nonnan, Ann. Mag. NaL HisL Ser. 7, VoL XIV, p. 445. 



Occurrence. This species is unknown to me. It is enumerated here because Norman's spe- 

 cimens have been dredged in the cold area south-west of the Faroes in LaL 6o22' N, Long. 8ai'W, 

 327 to 430 fath. 



Pleuroprion zur Strassen. 



This genus is closely allied to Archtrus, but it is accepted, a* its forms differ materially in 

 shape, and the abdomen has only one laterally discernible segment before the large terminal segment 

 The number of marsupial lamella: is mentioned above on p. 192. The material comprises three species, 

 one among them new. The following analytical key points out some of the best characters. 



A Knd of abdomen with a median incision and two acute points. Penultimate joint of the antenna! 



peduncles without processes excepting sometimes from the distal outer angle. Three spinifonn pro- 

 in }. >S 



