CYPRIS. 157 



11. CYPRIS CLAVATA. Tab. XVIII, fig. 4. 



CYPRIS CLAYATA, liaird, Mag. Zool. aud Bot., i, 137, t. 5, f. 16, 1837; 



Trans. Bcrw. Nat. Club, ii, 152. 

 M. Edwards, Hist. Nat. Crust., iii, 405. 



Shell oblong, narrower at posterior extremity than 

 anterior, which is rather flattened, giving the shell the 

 appearance of being club-shaped. The valves have the 

 upper margin elevated, and the lower nearly straight. 

 They are smooth and shining, but beset round the margin 

 with short hairs ; their colour is of a light gray, with an 

 obscure dark-coloured ray running from the centre towards 

 the posterior extremity, which again is distinctly marked 

 with an orange-coloured spot. 



The antennae and feet are short, compared with the size 

 of the shell. The filaments of both pairs of antennae are 

 plumose. 



This species approaches near to C. crassa of Miiller, as 

 described by him ; but differs in toto from the figure 

 which he gives of it. 



. In a pond near Copenhagen Fields, July 1836. 



12. CYPRIS STRIGATA. 



CYPRIS STRIGATA, Miiller, Zool. Dan. Prod, 199, 2387, 1776; 



Entomostraca, 54, t. 4, f. 4-6. 



Eamdohr, Beyt. zur Naturg, 14-17, t. 4, f. 1-14. 



Latreille, Hist. Nat. Crust., iv, 245. 

 Desmarest, Cons. gen. et part. Crust, 386. 



Base, Man. d'Hist. Nat. Crust, ii, 297. 



Baird, Trans. Berw. Nat. Club, i, 99, ii, 152 ; 



Mag. Zool. and Bot, i, 132. 



MONOCULUS STRIGATUS, Gmelin, Linn. Syst. Nat, 3002, 37. 



Fabricius, Ent. Syst, ii, 496. 



Manuel, Euc. metli, vii, 726, No. 31. 



Rees, Cyclopaedia, art. Monoc. 

 MOXOCULTJS BISTRIGATTJS, /n>e,Hist. Nat. Mon, 177, 1. 19, f.12, 13. 



M. Edwards, Hist. Nat. Crust, iii, 403. 



" Shell subovate, glabrous ; ciliated at the margins, sub- 

 linear at the aperture ; valves rather convex, brown, with 

 three white fasciae, the posterior one lunated, the middle 



