Land, Fresh- Water, and Marine Crustacea. 285 



pools on the shore at Aberlady; pools in an old brickfield 

 at Seafield, near Dunbar ; mouth of the Cocklemill Burn, 

 Largo Bay. 



77. Cytheridea lacustris (G. 0. Sars). 



1862. Oythere lacustris, G. 0. Sars, Zoolgisk Reise i. Sommeren, 

 1862, p. 30. 



Hab. — Union Canal, near Edinburgh (D. Eobertson) ; Loch 

 Leven, moderately frequent. 



Genus (25) Eucythere, G-. S. Brady, 1868. 



78. Eucythere declivis (Norman). 



1864. Oythere declivis, Norman, Nat. Hist. Trans. Northumb. and 

 Durh., vol. i. p. 16, pi. v. figs. 9-12. 



Hab. — Off the west side of Inchkeith and various other 

 places ; frequent. 



Genus (26) Krithe, G. S. Brady, Crosskey, and 

 Eobertson, 1874. 



79. Krithe bartonensis (T. E. Jones). 



1856. Cytherideis bartonensis, Jones, Mon. Ter. Entora., p. 50, 

 pi. v. figs. 2 a, b; 3 a, b. 



Hab. — Near the mouth of the Forth estuary ; moderately 

 common. 



Genus (27) Loxoconcha, G. 0. Sars, 1862. 



80. Loxoconcha impressa (Baird). 



1850. Oythere impressa, Baird, Brit. Entom., p. 173, pi. xxi. fig. 9. 



Hab. — Aberlady Bay, Largo Bay, and other parts of the 

 estuary; frequent. 



81. Loxoconcha guttata (Norman). 



1864. Oythere guttata, Norman, Nat. Hist. Trans. Northumb. and 

 Durh., vol. i. p. 19, pi. vi. figs. 9-12. 



Hab. — Firth of Forth (Brady and Norman), South Bay 

 and off North Berwick ; frequent. 



