214 



COPEPODA 



observed. The lamina labialis seems to be represented by a transverse crest; in front of it on each 

 side a longitudinal area of very minute hairs is found, and behind, a serrnla 6-dentata consisting of 

 rather short setae is observed. The labial lobes are well developed, but no setae are observed upon them. 



Yrf (St. V). Size of female from Thor St. 72 was 4-88 mm. ; anterior division 3-80 mm. ; urosome 

 ro8 mm. Male from the same station measured 5-37 mm. 



The young animals are in most respects like those of the adult females; the fifth thoracic 

 tergite is distinctly marked out (text-fig. 66 c). The only difference is found in the structure of the 

 fifth foot, which in one female was scarcely different from that of the adult, while in another, probably 

 a variation, the distal outer seta is comparatively short, but in addition to it another proximal one is 

 observed, and the endopodite is indicated by a short rounded process (text-fig. 66 b). In the male the 

 setae are short, and a long endopodite is found (text-figs 66 b d). 



YQ (St. IV). Size of male from Thor St. 167 was 3-48 mm.; anterior division 2-90 mm.; urosome 

 0-58 mm. 



The shape of the body shows the usual differences; the lateral corners are slightly more produced 

 (text-fig. 66 e). The mouth-limbs are scarcely different, but the 3 last natatory legs have the number 

 of segments reduced: the second foot, f. inst., has the 2 last outer segments fused with 3 outer spines 

 only; the number of teeth on the posterior surface is smaller. The fifth foot of the female has 3 seg- 

 ments, a strong terminal spine, and a short outer spine, but no inner one. The fifth foot of the male 

 is, as seen in text-fig. 66 f, distinctly smaller than in preceding stage. 



Occurrence. The Ingolf has not taken this species, but it was gathered at several stations by 

 the "Thor". 



In Denmark Strait: 



'9/6 1904 St. 152 65oo L. N. 28io L. W. Yt 1000 M. Wire 10 f?, i y? (V), 4 y c? (V). 



*>/ 6 1904 St. 153 6 5 27 L. N. 27 1 2-5 L. W. 6 f ?, i y<? (V). 



/6 I9P4 St. 154 6 5 27 L. N. 2 7 io L. W. 3 f?, i <?, a y? (V). 



In the Atlantic South of Iceland: 



/s 1904 St. 78 6io8 L. N. 28 L. W. i y? (V). 



V 9 1904 St. 285 6249 L. N. i846 L. W. 14 f?, i y? (V), i yd 1 (V). 



"/ 7 1904 St. 183 6i30 L. N. I7o8 L. W. Yt. 1800 M. Wire 15 f?, 8 frf". 

 *5/ 5 1904 St. 104 6 2 47 L. N. I 5 o 3 L. W. 7 f ?; i f <?, i y? (V), 2 yd 1 (V). 



In the Fseroe-Iceland channel: 



/ 5 1904 St. 99 6iis L. N. 9^5 L. W. Yt. 1700 M. Wire i f ?. 



Yt. 900 M. Wire 3 f?. 



4/8 1904 St 230 63io L. N. 73i L. W. Yt. 1200 M. Wire i f ?. 



I2 / 5 1904 St. 78 6io7 L. N. 93o L. W. 2 f?. 



'9/8 1905 St. 165 6ooo L. N. io35 L. W. Yt. 1000 M. Wire i f?, i yd 1 (V). 

 Outside the lugolf area: 



'5/6 1905 St. 82 5i32 L. N. I203 L. W. Yt. 1200 M. Wire 5 f?, i y? (V), i y c? (V). 



Yt. 800 M. Wire i f?, i yd 1 (V). 



