B66 MR. G. S. BRADY ON ENTOMOSTRACA TAKEN 



margin of the left valve somew^hat flattened, that of the right 

 boldly arched, hingement simple. Limbs short and stout, su- 

 perior antennae six -jointed, shortly setose, inferior altogether 

 destitute of swimming setae ; first and second feet as in Cypris ; 

 abdomen rudimentary. 



I have as yet met w^ith only one perfect animal of this genus, 

 though not a few empty shells have been found in various widely 

 separated localities. These have always occurred in running 

 water, not far from the sea, except in one or two cases where 

 dead shells have been brought up by the dredge. Further op- 

 portunities will probably reveal more points of difference between 

 this and the closely allied genus Cyprklopsis than I am now able 

 to point out. The marked inequality of the valves, together 

 with the absence of swimming setae from the lower antennae, are 

 however of sufficient importance to call for recognition as generic 

 characters. 



PoTAMocYPRis FULVA, [Bvudy.) Plate XIV., fig. 4. 



Bairdia fulvn, Brady. Monog. recent Brit. Ostrac, p, 

 474. PI. XVIII., fig. 21. Brady and Kobertson. Ann. 

 and Mag. Nat. Hist., Ser. 4, Vol. III. (1869). Plate 

 XVIII., figs. 1-4. 



The yellowish colour of the carapace from which this species 

 was first described suggested to me the specific name, which 

 proves however inappropriate, the one or two living specimens 

 since found having been green. The one living example recently 

 got at Fulwell is dull green, with a large patch of a darker shade 

 about the centre of the dorsal margin, on which are one or two 

 small orange blotches. The shell is usually (though not always) 

 rather coarsely punctate and sparingly hispid. Its general ap- 

 pearance is somewhat like that of Cypris villosa, but larger and 

 coarser : other more important distinctions are pointed out in 

 the generic definition. 



P. fulva has occm-red in the following localities : — Roundstone 

 Bay and River Lifi'ey , Ireland ; Scarpa Floe and Montrose Basin, 

 Scotland ; near the mouths of the AVarn Burn, and rivers Coquet, 



