CYPRIS. 
157 
11. Cypris clayata. Tab. XVIII, fig. 4. 
Cypris clayata, Baird, Mag. Zool. and Bot., i, 137, t. 5, f. 16, 1837; 
Trans. Berw. Nat. Club, ii, 152. 
— M. Edwards, Hist. Nat. Crust., iii, 105. 
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 Muller, as 
described by him ; but differs in toto from the figure 
which he gives of it. 
Hab. — In a pond near Copenhagen Fields, July 1836. 
12. Cypris strigata. 
Cypris strigata, Muller, Zool. Dan. Prod., 199, 2387, 1776 ; 
Entomostraca, 54, t. 4, f. 4-6. 
— Ramdohr , Beyt. zur Naturg., 14-17, t. 4, f. 1-14. 
— Latreille , Hist. Nat. Crust., iv, 245. 
— Desmarest, Cons. gen. et part. Crust., 386. 
Bose, 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, Enc. meth., vii, 726, No. 31. 
— j Rees, Cyclopaedia, art. Monoc. 
Monoculus bistrigatus, Jurine, 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 
