l82 



COPEPODA 



Remarks etc. Of this species the S/'S Thor has 2 9/ 8 1905 St. 165 6o°oo Iy. N. io°35 h. W. taken 

 a single mutilated female. This species is nearly related to E. Sarsi, but it easily distinguished by the 

 smaller size, by the structure of the genital somite, by the 9 setae in the L,e of the maxillulae, and 

 by the well developed Se Re I pes I. 



54. Euchaete Bradyi n. sp. 



(PI. VI fig. 9 a; text-figs 53 a — b). 



Description. Size: 8-0 mm.; anterior division 5-5 mm.; urosome 2'5 mm. 



The anterior division is about 2'2 as long as the urosome, which is about as long as the 

 abdomen is wide. The lateral corner is rounded, with a heavy tuft of hairs. The proportional length 



between the abdominal so- 

 mites is 40, 25, 25. The ventral 

 surface of the three last ab- 

 dominal somites possesses a 

 number of short delicate hairs. 

 The genital somite is i*6 as 

 long as wide, but, on account 

 of the high ventral protuber- 

 ance, only i-i as long as deep; 

 no posterior process is found 

 on the left side. The subapical 

 seta is broken, but is probably 

 longer than St. 2. The ante- 

 rior flange on the side of the 

 vulva is rather short, with 

 a somewhat convex outline, when observed in lateral view; the posterior margin is rather prominent. 

 The vulva is covered by the lateral flanges, in any case in front, to a greater extent than in the other 

 species; the triangular plate in front is indistinctly developed; posteriorly a median incision is found, 

 on each side of which a complicated chitinous framework is found (text-figs 53 a — c). 



The antennulae extend somewhat beyond the end of the abdomen; the appendages are like 

 those of E. norvegica; the segments 24032s are ri as long as segment 19. The L,e of the maxillulae 

 possess two short and 5 long setae; the basipodite has 5, and the Ri 3 + 4 + 3 setae. The other mouth- 

 limbs do not show features of any interest. 



The articular line between Re I — II pes I is indistinctly marked; the Se Re I is wanting, and 

 the concavity distal to its usual insertion is only moderate. The exterior outline of the Re III, which 

 in most species is more or less straight, is moderately convex towards the middle, and the usual 

 glandular pore is not seen. The Se Re II of the pes II extends almost to the tip of the Se 1 Re 

 III, and the Se 2 of this segment extends somewhat beyond the middle of the third division, but not 

 to the end of the segment. 





Text-fig. 53. Euchtzte Bradyi n. sp. f 9- 

 a — b. Abdomen X 16. c. Vulva from below X i* 





