CRfSTACKA M ALACOSTRACA. 53 



on the north-west coast also it has been taken in Patriks Fjord and Arnar Fjord in 20 to 50 fm.; on 

 the north coast several times in Skalfandi and once in no I'm. 



Distribution. Norman notes the species from the Shetland Isles, but it is not improbable 

 that there was confusion with the later established S. Sarsii. In 1890 Sars writes that this species is 

 found on the west coast of Norway, it occurs at Lofoten and according to his account must go much 

 further sonth, though he does not mention the limit. It is also found on the western and eastern 

 coasts of Finmark (Sparre-Schneider and Norman), in the whole of the Murman Sea and in the White 

 Sea (Birula); further in the Barents Sea (Hoek, Stebbing), is frequent at Spitzbergen right up to 

 81° 14' N. L. at all depths between 5—8 fm. and down to 133 fm. (Ohlin, Doflein, Birula); it is common 

 in the Kara Sea in 10 to 100 fm. (Stuxberg, Hansen), has been taken in the Siberian Polar Sea at 

 ii5 i; 2 E. L. and 170 17' E. L. (Stuxberg). On the east coast of North America it goes south to Mass- 

 achusetts Bay, ca. 42 1 ,° N. L., and it has been taken at a number of localities from there to the St. 

 Lawrence estuary in 15 and down to 70 fm. (Smith, M. Rathbuu). It is not found in the Behring 

 Straits and north of the American continent — i. e. between ca. 180° and 8o° W. h. The species has 

 been taken in 7—0 fm. and down to ca. 180 fm.; it is a pronouncedly arctic form. 



Remarks. Ohlin (Bib. K. Sv. Vet. Akad. Handl. B. 27, Afd. IV, No. 8, p. 37) has already 

 mentioned the superficial remark of Doflein's in "Fauna Arctica" that Sab. Sarsii is a variety of 6'. 

 septemcarinata; Doflein has probably never seen S. Sarsii. Ohlin also mentions the S. septemcarinata 

 described and figured by Bate in the "Challenger" Macrura; Bate says that his specimens agree most 

 closely with Smith's S. Sarsii, which he considers as a "pronounced variety". This last opinion is 

 incorrect; I have never seen any specimens which in regard to the form of the rostrum were inter- 

 mediate between *S'. Sarsii and .S - . septemcarinata; also, there are very interesting differences in the 

 geographical and bathymetrical distribution of the two species. The largest Icelandic specimen, a 

 female with eggs, is from Bern Fjord and measures 76 mm.; from 70 48' N. L. comes the largest East 

 Greenland specimen, likewise a female with eggs, 81-5 mm.; the largest specimen from the Kara Sea 

 was 82 - 5 mm. 



46. Pontophilus norvegicus M. .Sars. 



1861. Crangou norvegicus M. Sars, Nyt Mag. f. Naturv., B. 11, p. 248. 

 ! 1868. Pontophilus M. Sars, Nyt Mag. f. Naturv., B. 15, p. 242, Tab. I, Fig. 1-25, Tab. II, 



Fi g- 17—37- 

 Occurrence. The "Ingolf has brought home this species from many stations: 

 Davis Straits: St. 32: 66° 35' N. L., 56 38' W. L., 318 fm., temp. 3-9°; 20 spec. 



- 35:65° 16' - 55° 05' 362 - - 3-6°; 4 -, 

 _ - 28;65 i4' - 55° 42' - 420 - - 3-5°; 2 - 



- 27: 64° 54' - 55° 10' - 393 — 3-8°; 50 - 



- 25: 63° 30' - 54° 25' - 582 - 3-3°; 2 

 West of Iceland: .St. 97: 65° 28' N. L., 27° 39' W. L., 450 fm., temp. 5-5°; 2 spec. 



— - 90: 64° 45' — 29° 06' — 568 — - 44°; 1 - 



These two specimens possibly do not belong to this station but to St. 27 



