CRUSTACEA MALACOSTRACA. 



49 



41. Sclerocrangon ferox G. O. Sars. 

 1877. Cheraphilus ferox, G. O. Sars, Arch. f. Math, og Natiirv., B. II, p. 239. 

 1882. — — Hoek, Nied. Arch. f. Zool., Supplb. I, p. 9, Taf. I, Fig. 3. 



! 1885. Sclerocrangon salebrosns, G. O. Sars, Norske Nordhavs-Exped., Crust. I, p. 15, PI. II. 

 1887. ~ ferox, H. J. Hansen, Dijmphna-Togt. zool.-bot. Udb., p. 236. 



Occurrence. The "Ingolf" has taken this species at two stations. 



South of Jan iVIayen: St. 116: 7o°05'N. L., 8° 26' W. L., 371 fm., temp. -=- 0-4°; 3 spec. 



North of the Faeroes: - 143: 62° 58' — 7° 09' — 388 — — -f-o-4°; 4 — 



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

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

 part of East Greenland at two places: Fleming Inlet, 7i°5i'N. L., 22° 27' W. L., 118 fm., red clay, 4 

 specimens, and Forsblad Fjord, 72° 27' N. L., 25° 28' W. L., 90—50 fm., clay with stones and gravel, 

 2 specimens. One specimen was taken by the Ryder Expedition at 74° 17' N. L., i5°2o'W. Iv., 127 fm., 

 muddy bottom with small stones. Ohlin gives a number of localities along the same part of East 

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



Distribution. The .species has been taken N. E. of the Shetlands 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., temp. -=- i-o° (G. O. Sars); 

 Jan Mayen, 95 fm., temp. ^o-6° (G. O. Sars); in the waters of Spitzbergen at a number of localities, in 

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

 to var)- between -|- 2" and -=- 171°; the most northerh* of these places was north of Spitzbergen at 

 81° 20' N. L. (Doflein). It has also been taken in the northern part of the Murman Sea (Birula), in the 

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

 known further to the east. 



In the Bih. 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 depth and temperature in comparison with Scl. boreas. 

 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 2°) aud thirteen times where the temperature at the bottom was 

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

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

 in much shallower water even into 3 — o fm. It has never as yet been taken with the other species. 



Remarks. The largest Greenland specimen is from Forsblad Fjord; it is 128 mm. long; the 

 largest specimen from the Kara Sea is 130 mm. 



42. Nectocrangon lar Owen. 

 1838. Crangon lar Owen, Zool. of Capt. Beecheys Voy., p. 88, Pl.XXVIII, fig. i. 

 ! 1842. Argis lar Kroyer, Naturh. Tidsskr., B. IV, p. 255, Tab. V, Fig. 45—62. 

 1904. Nectocrangon lar M. Rathbun, Harriman Alaska Exped., p. 137, with figs. 

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



The Ingolf-Expedition. HI. 2. 7 



