72 



BULLETIN 15 8, UNITED STATES NATIONAL MUSEUM 



Occv/rreTice. — Ten males and females from trawl wings, Stations 

 2093, 2173, 2230, Albatross, south of Long Island and Marthas 

 Vineyard. 



Distribution. — North Atlantic (Farran, Pearson) ; Iceland, Faroe 

 Channel (With); North Sea (van Breemen). 



Color. — Body a uniform light flesh color; abdomen and appen- 

 dages colorless and transparent; no eye spot visible. (Kathbun.) 



FeTTiale. — Metasome four times as long as urosome; fourth and 

 fifth segments distinctly separated, the posterior corners of the fifth 

 segment each produced into a small tooth; basal segment of fifth 



legs with a row of 

 spines on the inner 

 margin; second seg- 

 ment with stiff hairs 

 at the outer distal 

 corner; end segment 

 with two terminal 

 spines very unequal 

 in size, and one spine 

 on each lateral mar- 

 gin, all four spines 

 setose; end segment 

 more than twice as 

 long as wide, much 

 narrower distally, 

 and hairy on its 

 posterior surface. 

 Total length, 4.5- 

 5.25 mm. 



Male. — Metasome 

 only three times as 

 long as urosome ; 

 posterior corners of fifth segment rounded, without a tooth; fifth 

 legs rather slender, right leg 6-segmented, reaching the center of the 

 fourth segment of the left leg, the end segment longer than the two 

 preceding it and needlelike ; left leg 5-segmented, third segment with 

 a seta at the outer distal corner, fourth segment with a rounded 

 knob at the inner distal corner, tipped with three or four setae, ter- 

 minal segment short and clawlike, with two small spines on its inner 

 margin. Total length, 5 mm. 



RemarTcs. — One of the specimens from Station 2230 was a young 

 male, and it is well worthy of note that at this stage the legs of the 

 male are hirsute like those of the adult female. Farran found this 

 copepod at a depth of 630 fathoms, With's specimens came from a 



Figure 48. — Xanthocalanus pinguis: a, Male, dorsal ; 6, fe- 

 male, fifth leg ; c, male, fifth leg 



