CRUSTACEA MALACOSTRACA. 



fairly short. — There is no doubt that the specimen belongs to A. brevirostris ; there was no reason 

 for Bate to consider the one of his two specimens as a variety. 



74. Pasiphae tarda Kr. 



! 1845. Pasiphae tarda Kroyer, Naturhist. Tidsskr., Ny R., 1. R, p. 434. 

 1846. — — Kroyer, Voy. en Scand., Crust., PL I, A. B. a— o. 



! 1868. norvegica M. Sars, Ny t Mag. for Naturv. B. 15, p. 282, PL I— V, Fig. 65—86; Pl.V, Fig. 81,87—90. 



Occurrence. The "Ingolf' has taken this species at 5 stations. 



Davis Straits: St. 28: 65 14' N. L., 55°42'W.R., 420 fm., temp. 3-5°; fragments of 3 spec. 



West of Iceland: St. 97: 65°28'N. L., 27°39'W. L., 450 fm., temp. 5'5°; 1 spec. 



South-West of Iceland : St. 81: 6i°44'N.L., 27°oo'W.R., 485 fm., temp.6-i°; 1 spec. 



North of East Iceland: - 126: 67° 19' — 15° 52' — 293 — — ^-0-5°; 1 spec. 



South of Jan Mayen: - 116: 7o°05' — 8° 26' — 371 -^04°; 4 — 



Kroyer founded the species on two specimens from the southernmost part of West Greenland. 

 In 1904 it was taken by the "Thor" at no fewer than 9 localities, namely, at 3 places west of Iceland 

 from 65 to ca. 6572° N.R., 27 10' to 28°io'W. R., young-fish trawd, 740, 763 and 1240 meters wire out; 

 north of east Iceland at 67°i9'N. L., I7°55'W. L., young-fish trawl, 800 meters wire out; at 3 places 

 south of Iceland, young-fish trawl, 100, 800 and 1800 meters wire out; lastly, twice south-west of the 

 Faeroes, young-fish trawl, 820 and 900 meters wire out; a number of specimens were taken south-west of 

 the Faeroes, at 61° 7' N. L., 9° 33' W. R., 425—460 fm., by the "Michael Sars". Ortmann mentions one 

 specimen taken in the vertical net, 0—600 meters, not far from the "Ingolf station 81. 



Distribution. In the North Sea one specimen has been taken off northern Jutland on the 

 surface (Meinert); in the Skager Rak it is fairly common pelagically in deeper layers ("Thor"); it 

 occurs along the south and west coasts of Norway from Christiania Fjord "at any rate to Rofoten" 

 (G. O. Sars), it has later been taken even at Malangen, 69° 33' N. R. (Nordgaard). It has also been 

 taken in the Norwegian Sea far to the west of Norway at 3 stations with very great depths and 

 bottom-temperatures from -f- ri° to -r- i'3° (G. O. Sars), lastly in the vertical net at 3 places from 73 

 to 737.> N. R., 2° to 2° 50'W. R. (Ohlin). S. I. Smith has seen specimens from places off the east coast 

 of America, Massachusetts, where it goes no further south than Cape Cod. Ro Bianco states that he 

 has seen specimens from a number of localities in the Mediterranean off the west coast of Italy, but 

 some of his determinations of Crustacea are not trustworthy. 



The species is pelagic as supposed by Sars; it lives often, perhaps as a rule, in depths from 

 150 to 300 fm., but can also swim much nearer the surface and apparently goes still deeper down 

 sometimes. I think however that it always keeps to water-layers with temperature above o°; this 

 agrees with the "Ingolf" stations 28, 97 and 81, with almost all the "Thor" localities and a number of 

 the others. In the Norwegian Sea it goes in my opinion with the warm surface-current towards the 

 north and north-west, but does not go down into the lower layers with temperatures below o°. 



Remarks. The largest of the specimens taken by the "Ingolf", from St. 116, is 96 mm. long; 

 a female with eggs came from 6i° 7' N. R., 9 33' W. R. (Bergen Museum) and measured 143 mm. from 

 tip of rostrum to end of telson. 



