COLLECTED IN CETLOK. 309 



Cttheee melobesioides, G. S. Brady. 



Cythere melobesioides, Brady, Les Fonds de la Mer, torn. i. p. 162, pi. 

 xix. figs. 10, 11 ; Report on the Ostracoda of the ' Challenger ' Expe- 

 dition, p. 108, pi, xviii. figs. 1 a,g. 



Cythere nodulifera, Brady, Les Fonds de la Mer, torn. i. p. 163, pi. 

 xix. figs. 24, 25. 



Cythere lactea, G. S. Brady. 



Cythere lactea, Brady, Trans. Zool. Soc. (1865) vol. v. p. 377, pi- Ix. 



figs. 3 a-c; Report on the Ostracoda of the 'Challenger ' Expedition, 



p. 91, pi. xxii. figs. 1 a-d. 



Cytheee bimamillata, n. sp. (Plate XL. figs. 10-12.) 

 Carapace very tumid, ventricose : seen from the side, quadran- 

 gular, height equal to nearly two thirds of the length and about 

 the same throughout ; anterior extremity obliquely rounded, 

 posterior truncated, scarcely rounded and nearly as vnde as the 

 anterior; dorsal margin almost straight, very slightly inclined 

 from before backwards, ventral straight : seen from above, the shell 

 in of an irregular lozenge-shape, greatest width equal to three 

 fourths of the length, and situated near the middle, where the 

 lateral margins form strongly projecting angles, converging 

 sharply towards the subacute anterior extremity and scarcely at 

 all towards the posterior, which is wide and truncated ; ventral 

 surface flattened. Shell-surface closely set v^ith circular im- 

 pressed puncta ; the centre of each valve has a strongly marked 

 irregular elevation, and the postero- dorsal angle has a similar 

 but much smaller nodule. Length gL of an inch ('43 millim.). 



Cytheee laqtjeata, n. sp. (Plate XXXIX. figs. 34-36.) 

 Shell, seen from the side, oblong, subovate, twice as long as high, 

 height nearly equal throughout, or only very slightly higher in 

 front, extremities obliquely rounded, the posterior flattened ; 

 dorsal margin almost straight, ventral slightly sinuated in the 

 middle : seen from above, oblong, subhastate, greatest width in 

 the middle and equal to less than half the length, tapering with 

 a gentle curve to the broadly pointed anterior extremity ; poste- 

 rior extremity truncated, wdth a wide emarginated median pro- 

 minence. Surface smooth ; a small rounded tubercle in the 

 middle of each valve, and four flexuous, not very prominent 

 longitudinal ribs, which unite in loops in front and behind. 

 Length ^- of an inch ("85 millim.). 



