CANDONA, 161 



prominent or gibbous in the centre, and glabrous, the 

 edges being fringed with rather long hairs. The colour 

 is of a light whitish-green, variegated with marks on the 

 anterior and posterior margins ; and on the sides, of the 

 same colour, but of a deeper hue. 



Hah. — Neighbourhood of London, summer months. 

 Yetholm Loch ; Newnham Loch, Northumberland, Dr. 

 Johnston. 



3. Candona hispida. Tab. XIX, fig. 4. 



Cypris ihspida, Baird, Traus. Berw. Nat. Club, i, 99, t. 3, f. 1 i, 1835; 

 Mag. Zool. aud Bot., ii, 135, t. 5, f. 6. 

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



Candona hispida, Baird, Traus. Berw. Nat. Club, ii, 153, 1845. 



Shell oval, rather ventricose, the anterior extremity a 

 little broader than the posterior. The colour is a uniform 

 brown, with one or two marks of a deeper hue running 

 across the centre ; both extremities partaking of the same 

 dark shade. The valves are very hispid, their surface 

 being covered with spines rather than hairs. 



Hab, — Neighbourhood of London ; Yetholm. Summer 

 months. 



4. Candona detecta. 



Cypris detecta, Miilter, Zool. Dan. Prod., No. 2386, 177,6 ; Euto- 

 mostraca, 49, t. 3, f. 1-3. 



— Bosc, Man. d'Hist. Nat. Crust., ii, 295. 

 ,_ LatreUle, Hist. Nat. Crust., iv, 241. 



— Leach, Edinb. Encyc. art. Crust., vii, 388. 



— Baird, Mag. Zool. aud Bot., i, 525. 



— Lamarck, Hist. An. s. Vert., v, 124. 

 MoNocuLUS DETECTUS, Gmelin, Linn. Syst. Nat., 3001, No. 36. 



— Manuel, Enc. meth., vii, 725, No. 30, t. 266, 



f. 15-17. 



— Rees, Eucyclop., art. Monoculus. 

 Smooth white insect, Midler, Phil. Trans., Ixi, 230, t. 7, f. 1-3. 

 Candona detecta, Baird, Traus. Berw. Nat. Club, ii, 153, 1845. 



Shell oblong oval; the anterior extremity rather narrower 



11 



