i 3 o 



COPEPODA 



antennae of the female are scarcely different from those of the adult female, but for the presence of 5 

 setae instead of 3 in Le; the antennae of the male are more similar to those of the adult male, as the Ri 

 is half as long as Re and has 7 setae in Li and 5 in L,e. In the maxillulae of the female the S 14 of 

 L,i I is distinctly shorter than S 13; this structure is probably due to individual variation, as S 13 and 14 

 in the male are of equal length. The legs differ from those of the adult female by the less prominent 

 Se of Ri I and by the completely smooth inner margin of the second basipodite in the fourth pair of 

 legs in male as well as in female. The fifth pair of legs (text-fig. 33 g) is distinctly different from 

 that of preceding species, as both Re as well as Ri are of almost equal length, and as the left leg is 

 distinctly pointed. 



Yg (St. IV). Size of female from Thor St. 88 4-69 mm.; anterior division 4-0 mm.; urosome 0-69. 



The fifth thoracic somite was not marked out; the antennulae extend a little beyond the end of 

 the abdomen. The antennae are practically like those of the female of the preceding stage, but the 

 Iyi of Ri has 6 setae; the Ri in the male, which has 6 setae in L,e, is not distinctly longer than in the 

 female. The Re of the maxillulae possess as usual in this stage 9 setae only. The first pair of legs 

 has as usual Re I — III completely fused; the Se Re I is much longer than Se Re II; the secretory 

 pore in the outer margin of Re II is wanting; while that in the outer margin of Re III is well deve- 

 loped; the pes II — IV show the usual differences; the inner margin of the second basipodite of the 

 fourth pair of legs is smooth in both sexes; glandular pores are in pes III — IV found at the base of 

 Se Re I and at the base of Se 3 Re III. The fifth pair of legs is very similar to that of E. rostrata, 

 but the endopodites are comparatively longer, and the Re dext. is more elongated with fairly loug St. 

 (text-fig. 33 i). 



Occurrence. The S/S Thor has gathered this species in six samples viz: 



»/ 7 1904 St. 183 6i°30 L. N. i7°o8 Iv. W. Yt. 1800 M. Wire 1 y? (V). 



l s/ 6 1905 St. 82 5i°oo Iv. N. n°43 L.W. Yt. 1200 M.Wire 6y? (V), 6 yo * (V). 



Yt. 800 M. Wire 1 y o* (V). 



"/ 9 1905 St. 167 57^6 Iv. N. 9^5 L.W. Yt. 1500 M.Wire if?, iy? (V), 1 yo* (V). 



37s — — Yt. 300 M. Wire 2 f;<?. 



s / 6 1905 St. 72 57^2 L. N. 9^3 L. W. Yt. 1500 M.Wire 2 f ?. 



*% 1905 St. 88 48°o 9 L. N. 8°30 L. W. Yt. 300 M. Wire 4 f ?, 1 y? (V), 6 y$ (V), 5 yd* (IV), 4 y? (IV). 



Distribution. This species is recorded from five stations on the west coast of Ireland at depths 

 of from 350 to 1000 fathoms; it has been taken at a great depth by the Gauss Expedition in the South- 

 Atlantic as far south as c. 35° L. S. (5 L. E.), and in the Malay Archipelago by the Siboga Expedition. 



Remarks. In spite of small differences, partly enumerated above, this species is certainly iden- 

 tical with that described by Wolfenden. I think that the described male is most naturally referred to 

 this species in spite of the comparatively small size, fairly long rostrum and rounded lateral corners of the 

 thorax, and especially on account of the shape of the frontal crest and the well developed accessory 

 teeth in Se Ri I of pes III— IV 







