CRUSTACEA MALACOSTRACA. 105 



almost their whole length; the sense organ in the inner ramus is moderately small, but distinct. The 

 telson has almost the same form as in Parerythrops abyssicola G. O. S.; it is moderately short, reaching 

 scarcely behind the centre of the inner ramus. The lateral margins are convex along the proximal 

 third of their length, distinctly concave and converging considerably backwards in their distal two- 

 thirds; the transverse terminal margin (fig. 10) is very short with 4 very long spines, the onter pair 

 of which is shorter and a little thinner than the inner (one spine of the inner pair is lost and the 

 other also for a smaller or greater part broken off); the distal part of the lateral margin has 5 small 

 spines. (The hindmost pair of marsupial lamellae are fairly small, evidently not fully developed; the 

 lamellce of the sixth pair of thoracic legs are very small, and there are none from the fifth pair). — 

 Length from rostrum to end of telson iy§ mm. 



The specimen preserved in formalin was of a dark greyish brown colonr when received. 



Locality. The specimen described was taken by the "Thor" on July 11 th 1904 at the fol- 

 lowing place: 



South of Iceland: 6i°3o'N.L., i7°o8'W. L, Young-fish trawl with 1800 meters wire out. 



Distribution. According to a kind letter from W. M. Tattersall a specimen measuring 

 25 mm. in length was captured near the middle of June 1906 at 49 27' N. L., i3°33'W.L. in the young- 

 fish trawl with 2S00 m. of wire out; the depth of sea was 2600 m. 



11. Erythrops serrata G. O. Sars. 



1863. Nematopus serratus G. O. Sars, Nyt Mag. for Naturv., B. XII, p. 235. 

 ! 1870. Erythrops serrata G. O. Sars, Mon. Norges Mysider, I, p. 27, Tab. II, Fig. 1— 12. 

 1892. — — Norman, Ann. Mag. Nat. Hist., Ser. 6, Vol. X, p. 162, PI. X, figs. 11. 



Occurrence. This species was only taken by the "Thor", which found it at the following places. 



South of Iceland: 63 46' N. L, 22° 56' W. L, 70 fan.; large number of specimens. 



— - — 63 15' — 22° 23' — 114— 172 fan.; 8 spec. 



— - — 63 18' — 21 30' — 94 fan.; 15 spec. 



Distribution. The "Thor" has taken it north-east of the Shetlauds, 85 fan. and in the North 

 Sea east of Scotland, 47 fan. It is noted from Shetland, 40—60 fm. (Norman), Fair Island, 60—80 fan. 

 (Th. Scott), from several places on the east coast of Scotland (Norman, Th. Scott), from the Irish Sea 

 (Holt & Tattersall) and west coast of Ireland, 80—293 fm. (Norman, Holt & Tattersall). Further, it 

 has twice been taken in the Skager Rak at some distance from Jutland in 49 and 70 fan. (Metzger, 

 Meinert). In Norway it is distributed from Christiania Fjord to West Finmark, usually in depths from 

 80 to 200 fan., but in 30—40 fm. in the inner parts of Christiania Fjord. 



12. Erythrops abyssorum G. O. Sars. 



1869. Erythrops abyssorum G. O. Sars, Nyt Mag. for Naturv., B. XVI, p. 326. 

 ! 1870. — G. O. Sars, Mon. Norges Mysider, I, p. 36, Tab. V, Fig. 1 — 12. 



Occurrence. The "Ingolf" has not taken this species and it has not been brought home by 

 any Dane from the region in question here, so that it is only included from the literature. 



Th.- Ingolf-Expediiion. Ill- ; '4 



X 



