2 G. STEWARDSON BRADY. 



almost pyriform ; tlie proximal long seta armed along its middle third with a double 

 series of about twenty -five short, sharp prickles (fig. 8) ; in the female these are 

 replaced by fine simple hairs (fig. 9). The secondary branch of the male antenna 

 (fig. 11) bears a large terminal hook, the base of which is sharply bent at a right angle, 

 and there is the usual fascicle of five long setae ; in the female (fig. 10) the secondary 

 branch has a simple terminal joint which bears four setae of unequal length. Spines 

 of the caudal laminae slender and simple (fig. 14). The shell appears simply granular 

 in structure until after removal of the delicate lining membrane, when it is seen to be 

 very closely and finely striated in a curvilinear fashion ; there is a conspicuous group 

 of gland-cells at the postero-ventral angle of the shell, and smaller gland-cells are 

 continued in single file round the entire margin. 



This species occurred plentifully in almost all the nettings taken in Winter 

 Quarters. It was, indeed, by far the most abundant of all the Ostracoda taken during 

 the Expedition. It has many points of resemblance to Paraconclioecia inermis, Glaus, 

 but cannot be identified with that species'. 



Paraconchcecia gracilis. 



ParaconchcRcia gracilis, Olaus. Die Gattungen und Arten der Mediterranen und Atlantischen 



Halocypriden, p. 15. 

 Paraconchcecia gracilis, Glaus. Die Halocypriden des Atlantischen Oceans und Mittelmeeres, p. 66, 



PI. xii. 



In a surface gathering from lat. 49° 40' S., long. 172° 18' 30" E. were found a 

 few examples of this species. Glaus saw only two specimens, a male and a female, in 

 material taken from a depth of 1500 metres in lat. 37° 45' N., long. 13° 38' W. 



PSEUDOCONCHCBCIA SERRULATA, var. Isevis. 



1874. Gonchacia serrulata, Claus. Die Familie der Halocypriden, p. 61, PI. 1, figs. 2-7, 9-11, PI. ii. 



figs. 12, 13, 17, 19. 

 1880. Halocypris atlantica, Brady. Report on the Ostracoda of the 'Challenger' Expedition, p. 164, 



PI. xi., figs. 1-15, PI. xii., figs. 11, 12. 



1890. PseudoconchcBcia serrulata, Claus. Die Gattungen und Arten der Mediterranen und Atlantischen 

 Halocypriden, p. 20. 



1891. Pseudoconchmcia serrulata, Claus. Die Halocypriden des Atlantischen Oceans und Mittelmeeres, 

 p. 72, PI. xix., figs. 1-14, PL xxiii., figs. 1-13. 



1895. Pseudoconchatcia serndata, Brady. A supplementary report on the Crustaceans of the Group 

 Myodocopa obtained during the 'Challenger' Expedition (Trans. Zool. Soc, London, Vol. XIV., 

 Part iii., 1897), p. 96, PI. xvii., figs. 22-24. 



This is a widely distributed species, both in the Atlantic and Pacific Oceans 

 (Glaus). It occurred plentifully i^ many of the Plankton collections made during the 

 voyage of the ' Ghallenger,' but I do not find any distinct record of its occurrence in 

 higher latitudes than 35° 41' N. and 56° 54' S. It was found in very few of the 



