﻿CRUSTACKA MALACOSTRACA. 



49 



41. Sclerocrangon ferox Cx. O. Sars. 

 1877. Cheraphilus ferox, G. O. Sars, Arch. f. Math. o,<r Nalurv., P.. II, p. 239. 

 1882. — — Hoek, Nied. Arch. f. Zool., vSuj)pll). I, p. ij, Taf. I, Fig. 3. 



! 1885. Sclerocrang-on .salebro.sus, G. O. Sar.s, Norske Nordliavs-Exped., Crust. I, ]>. 15, I'l. II. 

 1887. — ferox, H. J. Hansen, Dijinplma-Toijl. zool.-bot. Udb., p. 236. 



Occurrence. The "Ingolf" has taken this si)ecies at two stations. 



South of Jan Mayen: St. 116: 70° 05' N. L., 8° 26' W. L., 371 fni., temp, h- 0-4°; 3 spec. 



North of the Fceroes: - 143: 62" 58' — 7^09' — 388 — — ^o^''; 4 — 



In Malac. Groenl. I lurve mentioned it from 4 locaHties in Baffins Bay; the most northerly and 

 deepest of these was 75° 26' N. B., 260 fm. It was taken by tlie 2'"' Anidrup Expedition in the nortliern 

 part of Kast Cyreenland at two ]>laces: Fleming Inlet, 71° 51' N. L., 22'27'W. L., 118 fm., red cla\-, 4 

 specimens, and Forsblad Fjord, 72 ' 27' N. L., 25° 28' W. L., 90—50 fm., cla>- with stones and gra\-el, 

 2 specimen.s. One .specimen was taken by the Ryder P^xpedition at 74° 17' N. L., 15' 20'W. L., 127 fm., 

 muddy l)ottom with small stones. Ohlin gives a number of localities along the same part of F^ast 

 Greenland in ca. 50 to 150 fm. At Jan Mayen it was taken in 143 fm. (Koelbel). 



Distribution. Tlie species has been taken N. E. of the vShetlands at 62" 15' N. L., 0° 37' E. L., 

 356 fm. (Ohlin); off the west coast of Norway: 63'" 10' N. L., 5°o'E. L., 417 fm., tcni]). -f- i-o° (G. O. Sars); 

 Jan Mayen, 95 fm., temp. -=- o-6° (G. O. Sar.s); in the waters of Spitzbergeu at a number of localities, in 

 depths from ca. 50 fm. down to 532 fm. (Sans, Ohlin, Doflein, Birula), whilst the temperature is stated 

 to vary between -(- 2" and -^ 171°; the most northerly of these places was north of Spitzbergen at 

 8i°2o'N. E. (Doflein). It has also been taken in the northern part of the Murman Sea (Birtda), in the 

 Barents Sea (Hoek, Stebbing) and it is common in the Kara Sea in 49 — 91 fm. (Han.sen), but it is not 

 known further to the east. 



In the Bill. K. Sv. Vet.-Akad. Handl. B. 27, Afd. IV, No. 8, Ohlin (p. 28 — 29) discusses in detail 

 the distribution of this species with regard to deiJth and temperature in comparison with AV/. borcas. 

 Scl. ferox does not go into shallower water than ca. 50 fm. and is most often met with in depths 

 from 100 to 400 fm.; its frequency in the Kara Sea and occurrence in the cold area of the Norwegian 

 Sea shows that it is a typically arctic species; it has been taken seven times in places with the bottom 

 temperature above 0° (from 0-3" to z") and thirteen times where the temperature at the bottom was 

 negative (from -^ o-i° to -^ 17°) (Birula). Scl. borcas does not occur in the Kara Sea or in the cold 

 area mentioned and has not been taken with certaint\- in deeper water than 140 fm., whilst it is common 

 in much shallower water even into 3 — o fm. It has ne\-er as yet been taken with the other species. 



Remarks. The largest Greenland specimen is from F'orsblad F'jortl; it is 128 mm. long; the 

 largest sijecimen from the Kara .Sea is 130 mm. 



42. Nectocrangon lar Owen. 

 1838. Crangon lar Owen, Zool. of Capt. Beecheys Vox., p. 88, I'l. XX\'III, fig. i. 

 11842. Argis lar Kroyer, Naturh. Tid.sskr., B. IV, p. 255, Tab. \', i-'ig. 45— 62. 

 1904. Nectocrangon lar M. Rathbun, Harriman Ala.ska Fvxped., p. 137, with figs. 

 1904. — dentata M. Rathbun, Harriman Alaska Ivxped., p. 138, with figs. 



Th.> Iiij/olf-Kxpclilion III. 2. 7 



