I 2~ 



Wolfenden's specimens were obtained from the plankton collected by the 'Gauss'. The 

 species recorded by Saks as Lucicutia aurita, was found in the plankton collected by the Prince 

 of Monaco. 



4. Lucicutia longiserrata (Giesbrecht). 



Leuckartia longiserrata Giesbrecht, 1889, p. 813. 



Leuckartia longiserrata Giesbrecht, 1893, p. 359, pis. iy & 38. 



Lucicutia longiserrata Giesbrecht & Schmeil, 1S98, p. 112. 



Lucicutia longiserrata I. C. Thompson, 1903, p. 25. 



Lucicutia longiserrata Farran, 1908, p. 64, pi. VI, figs. 21 — 22. 



Lucicutia longiserrata van Breemen, 1908, p. 116, fig. 134. 



One female belonging to this species was found in the plankton collected with the Hensen 

 vertical net at Station 220, 200 metres to surface. 



Lucicutia longiserrata has a general resemblance to Lncicutia Jiavicoruis, but it can be 

 distinguished by the more robust body, and by the antennules extending beyond the end of 

 the furcal joints. This species is also closely related to Lucicutia longicornis, but the length 

 of the furcal joints does not exceed the combined length of the third and fourth abdominal 

 segments. 



Lticicutia longiserrata has been recorded from the Pacific and North Atlantic Oceans. 



5. Lucicutia maxima Steuer. Plate XLI, figs. 1 — 10. 



Lucicutia maxima Steuer, 1904, p. 596, fig. 4. Female. 



Two immature females and one mature male were obtained from the plankton collected 

 with the Hexsen vertical net at the following stations. 



Stat. 185 (1536 metres to surface), 1 specimen. — Stat. 230 (2000 metres to surface), 2 specimens. 



The three specimens have a general resemblance to Lucicutia clatisi, but they are much 

 larger and more robust. When vievved from above, each side of the cephalic segment is seen 

 to be furnished with one tooth-like projection as shewn in the illustration Plate XLI, fig. 1. 



Male — length 8,4 mm. 



The abdomen is composed of five segments. The combined length of the abdomen and 

 furca is contained one and one-fourth times in the total length of the cephalothorax, from the 

 frontal margin to the base of the genital segment. The furcal joints are much longer than 

 broad. Each joint is equal to half the length of the abdomen. 



The rami of the rostrum are very short and stout. They are slightly chitinised. 



The right antennule is twenty-three-jointed and reaches to the middle of the furcal joints. 



The endopodite of the first pair of feet is three-jointed. 



The second joint of the basiopodite of the left fifth foot is produced internally. The 

 distal end of the process is furnished with two very stout teeth. The inner margin of the second 

 joint of the basiopodite of the right foot is slightly inflated, and bears four short teeth. The 

 joints of the right exopodite are of about equal length. The second joint is furnished with two 



127 



