﻿COPRPODA 23s 



Occurrence. Tlie Thor has <>-athered 2 specimens: 



'V; 1904 St. 183 6r''3o L. N. i7°o8 L. W. Yt. 1800 M. Wire 1 f?. 

 >"/7 1904 St. 180 6i°34 L. N. i6°o5 L. W. Yt. 1800 M. Wire i fj'. 



Remarks. It is not without .some doubt tliat I have established a new species for tlic described 

 male and female. In spite of the variations in the fifth pair of legs, which is not uncommon to 

 several species, I think that the different shape of the fifth pair of legs, the larger size, and the dif- 

 ferent anuament of the first pair of legs warrant the establishment of a new species for the female. 

 I think that the males of the two species are distinctly distinguishable especialh- bv the right leg of 

 the fifth pair of legs. 



76. Xanthocalanus Greenii Farran. 

 (PL VII figs 3 a— g; PI. VIII figs 18 a— d). 



1905. XantliocaI;inu.s Greenii n. sp. P'arran, p. 39, pi. VIII fig.s [ 1908. Xanthocalanus Greeni Farr Karran, p. 48. 



1 — 13. j igo8. — — — V. Bremen, p. 60, fig. 67 



igo6. — — Farr. Pearson, 20. 



igo6? — calaminus n. sp. Wolfenden, p. 34, pi. XI 



figs 3--5- 

 1907. — Greeni Farr. G. O. Sars, p. 13. 



1908. — calaminus Wolf Wolfenden, p. 34. 



191 1? Talacalanus calaminus Wolf. Wolfenden, pp. 279 — 281, 

 Taf. XXXI, figs 9 12, text-figs 44 a— b. 



Description. Yd" (St. V). Size of young male was 8-12 mm.; anterior di\ision 669 mm.; iiro- 

 some i'43 ram. F'arra'n's specimen measured 6'0 mm. and Wolfeuden's 5-5 mm. 



The anterior division is short and robust, about 4-5 as long as the abdomen. The rostrum 

 consists of a pro.ximal portion, continued into 2 thin, but stiff, rather long and somewhat divergent 

 branches (PI. VIII fig. 18 a). The head is rounded witliout any trace of crest. The first thoracic tergite 

 is well marked in front b\' an articular line, which, beneath, is seen to be continued between the in- 

 sertion of the maxillae and maxillipeds, as is the fifth thoracic tergite, as seen in fig. i8 b. The lateral 

 corners are jDroduced and terminated with a small tooth. 



The comparative length of the abdominal somites and the furcal branches is 10, 17, 13, 7 and 

 15; the furcal branches are 1-4 as long as wide; serrated seam along the hinder margin of somite 

 II — III is well developed. 



The aittnniular extend almost to the end of bod\'; the appendages of the 24 segments are 

 like those of the preceding species; the Sp. of segment 24, which was broken, was placed in the 

 middle of the segment; the measurements are in the main like b'arran's description. The onfcinnir 

 are like Farran's description, with two rami of al)0ut etjual length. T\\c /ii/nidiljiil(ic \v..\\q a long and 

 slender manducatory part with rather weak teeth; the third ba.sipodite has three long slender spines, 

 of which the most distal is almost twice as long as the proximal ones. The iiiaxiUitlae have 7 long- 

 powerful + .shorter bristles in the exterior lobe; the Li I (1*1. \'I1 fig. 3 a) has 4 rather delicate Sa and 

 lu vSp., of which at least 8 are widened out to lancet-sluiped laminae with delicate .serration, as seen 

 in fig. 3 b; the \J\ 2 has 4 setae, and so has Li 3, and while the third basipodite has 4 vSa ; 1 Sp the 

 endopodite has 11 setae and the exopodite 10. The iiia.xillar are only slightl\ produced posteriorly; 



Loix 1 has 5 setae, lobe II— ill has 3 .setae, and lobe W (PI. \'I1 fi.g. 3 c) has a strong slightly curved 



30' 



