﻿CRUSTACEA MALACOSTRACA. 113 



Occurrence. Taken three times by the "Ingolf. 



South of Jan i\Iaycn : vSt. 113: 69" 31' N. L., 7" 06' \V. L., 1309 fm., temp. -^ i-o°; 3 spec. 

 — - — - 117: 69° 13' — 8^23' — i(«3 -- - -f-ro'-; I — 



North-Kast of Iceland: - no: 66" 44' — ii''33' — 7S1 — — -=-o-8°; i -- 



Distribution. Sars had 2 specimen.s, both taken between Nortli Cape and Jan Mayen, the 

 one at 72° N. h., in mo fm., temp. H- 13°, the other in the .stomacli of Rhodiclifliys rrs^itia from 72° 36' N. L.,' 

 1280 fm., temp. -^ i-4*". Olihn had a fragment from 78° 19' N. L., 8^41' K. L., 1428 fm., temp. -^ 1-4". The 

 species thus dwells in considerable depths with low to ver\- low temperatures, always negative, in the 

 Northern Ocean between Iceland, Kast Greenland, Spitzbergen and Norway. 



Remarks. A small addition to Sar.s' (and Ohlin's supplementary) description may be given 

 here. Mv best specimens are from .St. 117; the one of these is a female with marsupium measuring 

 ca. 45 mm. from the tip of the rostrum to the end of the telson, whilst a male is 42 mm. long. Tlie 

 eye-stalks differ a little in form; the most distal part is .sometimes more developed than Sars gives it, 

 in form like a conical process pointing forwards (fig. 5 a). — The female has 3 pairs of marsupial 

 lamellae, the first pair small. — The ]:)leopods of the male resemble in most features those in Mysidcis 

 ms/o-///s G. O. S.: on the first pair (fig. 5b) the outer branch is l)ut little longer than that of the 

 fourth pair, whilst the inner branch (fig. 5 c) is very short (yet by comparison considerably larger 

 than in A/. ///s/o///s), oblong-eggshaped, distally broadh' rounded, with the usual basal side-process on 

 the outer margin. The II'"'— IV"' pairs are almost the same both in form and length of rami; in the 

 IV"' (fig. 5d) the exopod is but little longer than the endopod, but the penultimate joint half as long 

 again as the antepenultinuite, and there are no thick terminal set:e with hairs covering the one .side 

 as in A/, h/sigi/is. 



30. Mysideis insignis G. O. Sars. 



1864. Mysis insignis G. O. Sars, N\t Mag. for Naturv., I!. XIII, p. 245. 

 ! 1879. Mysideis in.signis G. O. Sars, Mon. Norges My.sider, III, p. 2, Tab. IX— X. 



Occurrence. Only once taken by the "Thor". 



South of Iceland: 63° 15' N. L., 22° 23' W. L., 114- 172 fm.; ca. 10 .spec. 



Distribution. The species has been taken in Christiania hjord and along the we.st coast of 

 Norway at least to Malangen, ca. 69V/ N. U, in 50 to 300 fm. (G. O. Sars, Nordgaard). It was next 

 taken west and .south-west of Ireland in depths from a little over 50 to 372 fm. (Xormau, Ilolt .S: 

 Tattersall). 



31. Stilomysis grandis G. O. Sars. 



1864. My.sis grandis A. Goe.s, Of v. Kgl. Sv. \'et. Akad. Inhh., Arg. 20, 1863, ]i. 176. 

 ! 1879. Mysideis grandis G. O. Sar.s, Mon. Norges Mysider, III, j). iu6, Tab. XIJ XLIl. 



Occurrence. Once taken by the "Ingolf". 



Baffin Bay: St. 33: 67" 57' N. L., 55° 30' W. L., 35 fm., temp. o-8"; .1 .spec. 



In Malac. Groenl. it is noted from an adjacent place in Baffin Bay: 67'' 4' N. L., 5.1" 28' W. L., 

 32 fm., 2 .specimens; later, some specimens were taken at Jakobshavn, 69^3' N. L., by Trausledt. 



Thi. Inj;uil-Kx|K-.liti(ili. 111. 2. 15 



