of the North Atlantic and of North- Western Europe. 687 



thirty closely-packed, short, recurved margmal spines (fig. 4). The secondary 

 branch of the male antenna bears a thoroughly angulated, hooked appendage 

 (fig. 5). Basal joint of the mandible palp not longer than the united lengths of 

 the two following joints. Shell marked throughout with a not very conspicuous 

 quadrangular reticulation (fig. 8). Spines of the caudal laminse like tliose of 

 C. elegans, but having fine marginal pectinations. Length of the female 3'6 mm. ; 

 of the male 3 "15 mm. 



We are indebted to Dr. John Murray, F.R.S.E., for specimens of this species, 

 which were taken abundantly off Greenland, in lat. 74° 49' N. ; long. 11° 30' W., 

 in a depth of 350 fathoms, and by H. M. S. " Triton," in 1882, lat. 60° 20' N. ; 

 long. 7"23' W., in 200 fathoms, cold area, Faroe Channel. 



Compared with C. horealis, which it very closely resembles, C. maxima is rather 

 larger, and the shell is not so densely reticulated. The outline of the shell, seen 

 dorsally, is different, and the spinules of the principal seta of the male antennule 

 are considerably more robust. 



4, Conchoecia magna, Claus. 

 (PL LXii., figs. 5-13.) 



1874. Conchoecia magna, . . Claus, '' Schriften zoologischen Inhalts: i. Die 



Familie der Halocypriden," p. 6, pi. i., fig. 



6c ; pi. ii., figs. 16, 18. 

 1887. ,, tetragona, . . Saes, Gr. 0., "Nye Bidrag til Kundskaben om 



Middelhavetslnvertebrat fauna: iv. Ostracoda 



Mediterranea," p. 82, pi. xi., figs. 5, 6; pi. 



xiii., figs. 5—9. 

 1890, ,, magna, . . Muller, Gr. W., " Ueber Halocypriden," Zoolog. 



Jahrblicher, vol. v., p. 274, pi. xxviii., figs. 



28, 29, 33, 34, 39, 40. 



1890. ,, ,, . . Claus, Gattungen und Arten der mediterranen 



und atlantischen Halocypriden, p. 8. 



1891. ,, ,, . . Claus, " Die Halocypriden des atlantischen 



Oceans u. Mittelmeeres," p. 57, pi. ii., pi. iii., 

 figs. 1, 2. 



Shell of the female, seen from the side, oblong, subquadrangular, slightly 

 higher behind than in front, the greatest height being equal to about half the 

 length ; dorsal margin nearly straight, ventral slightly sinuated in the middle; ex- 

 tremities very moderately rounded, postero-dorsal angle obtuse, not at all prominent; 



5 D 2 



