716 Brady and Norman — Monograph of the Marine and Freshwater Ostracoda 



Caudal laminae, in the female, truncate at the extremity, which bears five ungues ; 

 the stoutest is at the dorsal corner, has pectinated edges and is strongly and 

 falcately curved, the second is small, the remaining three slender and each longer 

 than the preceding ; the lower, or front, margin of the lamina bears four peculiar 

 setae, flattened at the base, above which they are filiform, blunt-ended and pecti- 

 nated. The hinder portion of the body in the male has each of the five segments 

 preceding the caudal laminae furnished only with a single dorsal seta, but is 

 otherwise like that of the female. Copulatory organs of the male (PI. lxvii., 

 fig. 16) long, curvate, and cylindrical, resembling in form the same organs in 

 Conchceciadce ; divided at the extremity into three small digitiforni lobules. 



Cote du Soudan, lat. 22° 49' N., long. 19° 41' W., 466-1168 fathoms, 12th-15th 

 July, 1883 ; east of Canaries, 487 fathoms, 27th June, 1883 ; lat. 27° 31' N., 

 long. 16° 27' W., July 7th, 1883; in lat. 25°, 217-528 fathoms, 9th July, 1883 ; 

 off west coast of Morocco, latitude of El Arith, 600 fathoms; off Cap Blanc, 

 418—675 fathoms, and in other dredgings of which the precise localities are not 

 indicated (" Talisman" Dredgings, M. le Marquis de Folin). 



The figures and description of this species are taken entirely from specimens 

 which have been kept in a dried condition for eleven or twelve years, some of 

 which, however, after maceration in solution of potassium hydrate proved to be in 

 good condition for dissection. We believe, therefore, that the foregoing will be 

 found to be fairly accurate, though some of the more minute structures have 

 escaped observation. 



Amongst the numerous specimens of the shell which we have examined there 

 is very considerable difference of contour, dependent, it may be, upon age and 

 sex. The forms which we have figured are those which belong to the adult male 

 and female. 



2. Cytherella abyssorum, G. O. Sars. 



(PI. Lxvi., figs. 1, 2, 15; PI. LXVII., figs. 13, 14.) 



1865. Cytherella abyssorum, . . . Sars, G. 0., " Oversigt af Norges marine 



Ostracoder," p. 127. 



1865. ,, Beyrichi, . . . Brady, " On New or Imperfectly Known Os 



tracoda" (Trans. Zool. Soc, vol. v.), p. 

 362, pi. Ivii., fig. 3«, h. 



1866. „ Scotica, . . . Brady, " Brit. Assoc. Report," 1866, p. 211. 

 1866. „ ,, ... Brady, " Monog. Recent Brit. Ostrac," p. 473, 



pi. xxxiv., figs. 18—21. 



Shell of the female, seen laterally, subelliptical, of equal height throughout, 

 height equal to considerably more than half the length, extremities equal and 

 broadly rounded ; superior margin almost straight, inferior very slightly sinuated 



