160 
BRITISH ENTOMOSTRACA. 
Cypris. The others are deficient in this apparatus, and 
instead of swimming gaily through the limpid element, 
crawl in the mud at the bottom of the pools in which they 
are found, or creep along the aquatic plants which grow 
there, and if dropped into a glass of water, fall to the 
bottom, without being able to suspend themselves for the 
shortest time. These constitute the genus Candona, which 
I first published in the ‘ Trans. Berw. Nat. Club/ ii, p. 
152, 1845, and afterwards in the ‘ Ann. and Mag. Nat. 
Hist./ xvii, p. 414.* 
1 . Candona lucens. Tab. XIX, fig. 1 . 
Cypris lucens, Baird, Trans. Berw. Nat. Club, i, 100, t. 3, f. 15,1835. 
Cypris Candida, Baird , Mag. Zool. and Bot., ii, 134, t. 5, f. 3. 
Candona Candida, Baird, Trans. Berw. Nat. Club, ii. 153, 1845. 
Cypris pellucida, Koch, Deutsch. Crust., h. xi,-t. 5, 1837. 
Cypris lucida (?), Koch, Deutsch. Crust., h, xxi, t. 18, 1838. 
Shell somewhat reniform, arched on the upper margin, 
and sinuated underneath. The valves are ventricose in 
the middle, smooth, except round the edges, which are 
fringed with fine short hairs, shining, of a pure white 
colour, with a pearly lustre, and nearly opaque. The 
anterior extremity is narrower and flatter than the pos- 
terior, which is prominently arched on the upper angle, 
and prolonged interiorly to a short point. 
Hab. — Neighbourhood of London, Cockburnspath, 
Yetholm, &c. ; summer and autumn months.— . 
2. Candona reptans. Tab. XIX, figs. 3, 3a. 
Cypris reptans, Baird, Trans. Berw. Nat. Club, i, 99, t. 3, f. 1 1, 1835 ; 
Mag. Zool. and Bot., ii, 135, t. 5, f. 5. 
— M. Edwards, Hist. Nat. Crust., iii, 400. 
Candona reptans, Baird, Trans. Berw. Nat. Club, ii, 153, 1845. 
Shell ovate elliptical, nearly plane on upper margin, 
and slightly sinuated underneath. The valves are rather 
* Eor further characters of this genus, see the forthcoming monograph 
of the ‘Entomostraca of the Cretaceous Formation of England/ by T. Rupert 
Jones, Esq., publishing by the Palseontographical Society. 
