298 DK. tt. S. BEABY ON ENTOMOSTEAOA 



Ctpeis monilifeea, n. sp. (Plate XXXIX. figs. 10-12.) 

 Shell renif orm : seen from the side the extremities are rounded 

 and nearly equal, the posterior, however, somewhat flattened ; 

 dorsal margin boldly arched and almost gibbous in the middle, 

 ventral deeply sinuated in the middle ; height equal to more than 

 half the length : seen from above, ovate, widest in the middle, 

 tapered towards the anterior extremity, which is rounded, though 

 much narrower than the posterior. On each valve a little within, 

 and parallel to, the posterior margin, is a crescentic row of about 

 six bead-like tubercles ; otherwise the surface of the shell is quite 

 smooth. Colour green. Length -^j of an inch ("77 millim.). 

 I have met with one specimen only of this species. 



Ctpeis luxata, n. sp. (Plate XXXVIII. figs. 8-11.) 

 Valves very unequal ; the left much larger than the right, which 

 it overlaps at all points, except the anterior portion of the dor- 

 sum : seen laterally, the shape is subreniform, of nearly equal 

 height throughout ; anterior extremity somewhat obliquely 

 rounded, posterior oblique, subtruncate ; dorsal margin very 

 slightly arched, rather abruptly rounded off" behind, ventral 

 almost straight : seen from above, the outline is unequally ovate, 

 the right side being much smaller than the left. Height equal 

 to at least half, width equal to rather more than one third of 

 the length. Surface of the shell smooth. Colour greenish-brown. 

 Length -^^ of an inch ("98 millim.). 



Ctpeis puepueasoens, u. sp. (Plate XXXVIII. figs. 12- 

 14.) 



Shell elongated, subovate, rather tumid : seen laterally, the out- 

 line is subelliptical withrounded extremities, the anterior extremity 

 broad and evenly rounded, posterior somewhat produced and nar- 

 rowed ; dorsal margin well and evenly arched, ventral nearly 

 straight ; greatest height situated in the middle and equal to 

 nearly half the length: seen from above, ovate, widest in the 

 middle ; at least twice as long as broad ; right valve smaller than 

 the left; extremities equal, subacuminate, abruptly tapered. 

 Surface of the shell smooth. Colour creamy white, or yellowish 

 and clouded with parple. Length 2^- of an inch (1 millim.). 



This species was the most abundant of the Ostracoda sent to 

 me by Mr. Haly, 



