﻿2,0 COPEPODA 



Y$ (St. V). Size of female from Tlior St. 183 was 6-15 mm.; auterior division 4-9 mm ; iirosome 



1-25 mm. 



The shape of the body is more slender tlian in the adult female. Short, but distinct rostral, 

 filaments were found in the examined specimen. The comparative length of the abdominal somites 

 and the furcal branches is 30, 50, 40, 20 and 17; the somites are distincth- hirsute. The appendages 

 do not show anv difference of importance, except the fifth pair of legs; this was in one specimen (St. 

 167) shorter than that of the adult female, and especially the last segment was less slender; in another, 

 however (St. 183) (fig. 17 f PI. VIII), the last segment was, as seen in figure, divided into two; as the 

 right and the left foot were almost quite alike, I am most disposed to regard this feature as an 

 abnormit}^ and not as one characteristic of the male. 



Y? (St. IV). Size of female from Tlior St. 183 was 4-36 mm.; anterior division 344 mm.; uro- 

 some 092. 



The comparative length of the abdominal somites and the furcal branches is 28, 40, 40 and 17. 

 The iiiaxillitluc have only 9 setae in the exopodite. The natatory legs show the usual differences, as 

 the Ri II — III and Re II — III are fused; the second to fourth pairs of legs have only 3 Se in the Re 

 II f^ III. The fiftli pair of legs (PL VH 6 e) is rather short and clumsy, with the first outer seta of 

 Re III rather indistinct. 



Occurrence. The Thor has taken this species in Denmark Strait: 

 '9/6 1904 SL 152 65°oo L. N. 28°io L. W. i f?. 



In the Atlantic, south of Iceland: 



•°/; 1904 St. 180 6i°34 L. N. i9°o5 L. W. Yt. 1800 M. Wire i y$ (V). 



"/7 1904 St. 183 6i°3o L. N. i7°o8 L. W. Yt. 1800 M. Wire 3 f?, 5 frf", 2 y? (V), i y? (IV). 



"/5 1904 St. 99 6i°i5 L. N. 9=35 L. W'. Yt. 1500 M. Wire i f?. 



In the Iceland-Fseroe channel: 



29/8 1904 St. 165 6o'ot L. N. io°35 L. W. Yt. 1000 M. Wire i y?. 

 "/s 1904 St. 99 6i°i5 L. N. 9°35 L. W. Yt. 1700 M. Wire i f?; i y$ (V). 

 4/g 1904 St. 230 63°io L. N. 7°3i L. W. Yt. 1200 M. Wire i f?. 



In the Atlantic, south west of the Foeroes: 



9/6 1905 St. 72 57=52 U N. 9°55 L. W. Yt. 1500 M. Wire 2 f?, 3 y? (V), 2 y? (IV). 



Distribution. This .species has previously been recorded from the North-East Atlantic and is, 

 according to Parr an, not uncommon off the west coast of Ireland "at depths of from 330 to 1150 

 fathoni.s"; the other records are rather doubtful. 



Remarks. On full consideration I do not doubt that the females and males are rightly referred 

 to the same .species. 



My .specimens differ from Wo If en den's original description by its much larger size, and by 

 the maxillae, which do not possess "seven short thick brush processes", and, from a note (1906 p. 32) 

 by the number of setae in the third basipodite and the endopodite of the maxillulae. It differs from 

 Sar.s' O. tngoniccps by its size and the anteriorly well marked first thoracic tergite. 



