106 COPEPODA 



dinal group medially to the serrula 6-deutata and the inner series in front of the lamina (cf. PI. II fig. 

 7f s 6); if this interpretation is right, the serrula 6-dentata (fig. 7 f s 7) perhaps corresponds to Ser. 4. 



Y <j (Stage V). Size of female from Thor St 82 was 574, anterior division 4-2 mm., urosome 0-87. 



The relative length of the abdominal somites and the furcal rami, which are about 1-2 as 

 long as wide, is 20, 23, 18, 20 and 17. The appendages show similar differences from those in the 

 adult as G. Kruppi; the lamina of the second basipodite of the maxillipeds is shorter and more rounded 

 (text-fig. 26 d); but the inner margin of basip. II pes IV is smooth; the fifth pair of legs is in main 

 features like those of G. Kruppi (text-fig. 26 e). In contrast to Canu's description of a young male of 

 G. caudani the Re I II of pes I are completely fused without Se Re I. 



Y^ 1 (St. IV). Size of a male from Thor St 82 was 3-72 mm., anterior division 3-01 mm., urosome 

 071 mm.; a female measured 3-5 mm. 



The relative length of the abdominal somites and furca was 19, 18, 24 and 13. The anten- 

 nulae extend at least 8 segments beyond the end of the abdomen; the differences in the other appen- 

 dages are scarcely different from those described in Gaetanus Kruppi. 



Parasites and Abnormity. Sac-shaped parasites like those described in G. tcnuispinus were found 

 in one specimen from Thor St. 78 and 99, in 5 from Thor St 183, in 28 adult females from Thor 

 St 82 (Yt. 1200 M. W.) and in 60 from St 72. In a single adult female the setae of the right caudal 

 ramus was branched (text-fig. 26 b). 



Occurrence. The Ingolf Expedition has not gathered this species, but it has been captured at 

 the following stations by the S/S Thor in Denmark Strait. 



'9/ 6 1904 St. 152 65oo Iv. N. 28io L. W. Yt 1000 M. W. i y ? (V). 



? 8f?. 



*% 1904 St. 153 6 5 2o Iv. N. 27i2-5 L. W. 5 f?, i yd" (V). 



/e 1904 St. 154 6527 Iv. N. 27io L. W. i f?, i yd 1 (V). 



In the Atlantic south of Iceland. 



I2 / 7 1903 St 164 62io L. N. i 9 36 L. W. i yd 1 (IV). 



"/ 7 1904 St 183 6i30 L. N. I7o8 L. W. Yt. 1800 M. Wire 19 f?, i yd 1 (V). 

 2 V 5 1904 St. 104 6247 Iv. N. i503 L. W. Yt 1500 M. Wire 34 f?, i yd 1 (V). 

 2 / 9 1904 St 286 6i49 L. N. 14!! L. W. Yt 800 M. Wire 3 f?, i y? (V). 



In the Iceland-Faeroe channel. 



I2 / 5 1904 St. 78 6i7 L. N. 93o L. W. 3 f ?. 

 "/s 1904 St. 99 6iis Iv. N. 9 35 L. W. 7 f?. 



In the Atlantic, south-west of the Faeroes. 



'5/6 1905 St 82 5ioo Iv. N. n43 Iv. W. Yt 1200 M. Wire 270 f?, 38 y? (V), 15 yd 1 (V), 3 y? (IV), i y d 1 (IV). 



Yt. 800 M. Wire 40 f?, 4 y? (V), 3yd 1 (V). 



*/ 6 1905 St. 72 5752 Iv. N. 9 53 L. W. Yt 1500 M. Wire 180 f?, 23 y ? (V), i yd 1 (V), i yd 1 (IV). 

 /8 1905 St 165 6ooo L. N. io35 Iv. W T . Yt. 1500 M. Wire if?, i y<? (V). 

 2 % 1905 St 88 4809 Iv. N. 8=30 L. W. Yt. 300 M. Wire 2 f ?. 



