204 



Lucicutia bradyana, C:e, n.sp. 



Diagn. of the female. — Anterior antennie reach to the end of 

 the furca. Ri of the ist pair of legs 3-jointed. St of the ist 

 pair of legs nearly as long as Re 3, St of Re of the fifth pair of 

 legs shorter than Re 3. Si of the Re 2 of the 5th pair of legs a 

 stout spine as long as Re 3. Length 5,7 millim, 



Diagn. of the male.— St of Re 3 of the ist pair of legs nearly 

 as long as Re 3. Ri 2 & 3 of the right leg of the fifth pair loaf- 

 like, with 6S. B2 of the left leg on the interior margin produced 

 into a short spine. Length 5,5 millim. 



Brady (Rep. Challenger VIII. i. p. 50 P. XV., f. 1-9, 16 

 1883) has identified a copepod, found by the Challenger 

 Expedition, with Leuchartia flavicornis of Claus. This, how- 

 ever, cannot be correct as the differences, especially as 

 concerns the size, are too considerable. One female which I 

 found in the gathering off Port vShepstone, 900m., seems to me 

 to agree sufficiently with Brady's species. I found in the same 

 sample one specimen of a male of about the same size as the 

 female, and believe they belong to the same species. There are 

 between the male of my form and of Brady's serious 

 differences, which make the identification somewhat doubtful. 

 The right leg of the fifth pair carries on the Ri 4 seta? in 

 Brady's form, but 6 in my specimen. This may perhaps be 

 accounted for by the supposition that Brady's specimen had 

 lost two setaj. The other difference is in the B2 of the left 

 legs of the fifth pair. It was on my specimen produced into a 

 spine, but in Brady's specimen into a denticulated processus. 

 The difference depends perhaps on the age. 



The Lucicuiia grandis, Giesbrecht, is doubtless very closely 

 allied to both Brady's and my form. The male only is known 

 and differs principally in the B2 of the fifth pair of legs. 



The variation in the forms of the group of L. clausii is, 

 according to Giesbrecht, considerable, and it therefore seems 

 very probable that Lcitckaiiia fiaviconiis, Brady (von Claus), 

 Lucicutia i>rniidis, Giesb., and Lucicutia bradyana C:e represent 

 only variations in one and the same species. 



Description of the female. Body in length 5,7 millim 

 (anterior part 3,5, posterior part 2,2 millim), 3^ times longer 

 than broad (greatest breadth in the middle of the anterior 

 part). Head broad, on each side with a slight angular pro- 

 minence. — Abdomen 4-jointed, genital segment as long as the 

 two following together, and as long as the inflated abdominal 

 segment. Furca at least 5 times longer than broad, and as long 

 as the two last segments together. The furca has two Se, one 

 very small near the anal segment and another in the middle, 

 reaching to the end of the furca. 



