CYPRIDEIS. 
287 
Cardona hispid a, Baird. — Shell oval, uniform brown; 
valves very rough; surface covered with spines. 
Hab. Near London, and Yetholm. 
Candona detecta, Muller, sp. — Shell oblong, oval, 
valves flattened, pellucid, quite smooth, anterior part rather 
narrower than posterior ; colour dull-white. 
Hab. Near London, etc. 
Candona similis, Baird. — Shell elliptical, flat, narrower 
behind than in front; white, with two orange spots on back. 
Hab. Clapham Common. Dr. Baird observes that the 
motion of this species is very deliberate; when it creeps 
along the plants, it first puts one foot forward and then lei- 
surely draws up the other. 
Candona lactea.^ — Yalves of the carapace oblong, 
ovate, the surface smooth and shining, and of a dull size. 
Hab. Charing, Kent; and Regent's Park. 
A very small species. 
Cyprideis torosa, Rupert Jones. Entomostraca of the 
Tertiary Pormation/ p. 21, pi. ii. fig. 1; and woodcut, p. 
16, fig. 2.)— Pound in the pleistocene sands of Essex; 
* A species described by Dr. Baird, in the Proc. Zool. Soc. subsequently 
to tbe publication of his work. 
