306 DE. G. S. BEADT ON ENTOMOSTEACA 



inch ("56 millim.). The male is rather larger and more slender in 

 its proportions, and in many cases the sides of the shell show two 

 median transverse furrows. 



Tliis, like the preceding, occurred in considerable numbers in 

 Mr. Haly's gathering. 



Cttheee Etjpeeti, n. sp. (Plate XXXIX. figs. 16-18.) 



? Cythere cancellata, in part, Brady, Report on the Ostracoda of the 

 ' Challenger ' Expedition, p. 73, pi. xiv. figs. 9, d, e. 



Shell, seen laterally, elongated, subquadrate, very slightly higher 

 in front than behind ; height equal to somewhat less than half 

 the length ; anterior extremity obliquely rounded, bordered be- 

 low the middle and round the ventral angle with a series of about 

 twelve short, blunt, and equal teeth ; posterior obliquely trun- 

 cated above the middle, rounded and finely denticulated below ; 

 dorsal margin nearly straight, sloping slightly from before back- 

 ward, ventral gently sinuated in the middle : seen from above, 

 ovate, more than twice as long as broad, obtusely pointed and 

 emarginate in front, rounded behind and produced into a wide 

 central mucro. The valves are bordered before and behind with 

 a flattened lip or flange, which extends partially to the dorsal 

 and ventral margins. The surface is sculptured with distinct 

 rounded pits in young and middle-aged specimens, but in old 

 ones these tend to run into wavy transverse furrows ; there is 

 usually also a large central tubercle with a deep sulcus in front 

 and behind. Length -^^ of an inch (-85 millim.). 



This is a pretty and well-marked species which I have pleasure 

 in naming after my friend Professor T. Rupert Jones, T.E.S. In 

 the Calpentyn dredging it occurs abundantly, and in many stages 

 of growth. The ornamentation of the shell is almost exactly as 

 in C.fahacea, but its general contour is very different, the differ- 

 rences being well marked at all ages. 



Cttheee cancellata, Gi. S. Brady. 



Cythere cancellata, Brady, LesFonds de la Mer (1868) ; Report on the 

 Ostracoda of the ' Challenger' Expedition, p. 73 (1880). 



The type specimens of this species were from Java, those of 

 the ' Challenger ' Expedition from Booby Island and Tongatabu. 

 Two figures (plate xiv. fig. 9, d, e) given in the ' Challenger ' 

 Report are referable, I think, not to G. cancellata, but to the 

 species here described as Cythere Ruperti; of this, however — 

 the specimens not being at hand — I cannot be quite sure. 



