CYPRINIDA. GYMNOTIDvE. 373 



51. Carassius auratus y Linn. Golden Carp. 

 Hab. British waters (introduced) . 



Genus GOBIO. 



52. Gobio fluviatilis, Cuv. & Val. Common Gudgeon. 

 Hab. British fresh waters. 



Genus LEUCISCUS. 



53. Leuciscus rutilus (Linn.). Roach. 

 Hab. British fresh waters. 



54. Leuciscus vulgaris, Flem. Common Dace. 

 Hab. British fresh waters. 



55. Leuciscus phoxinus (Linn.). Minnow. 

 Hab. British fresh waters. 



Genus TINCA. 



56. Tinea vulgaris, Cuv. Common Tench. 

 Hab. British fresh waters. 



Genus NEMACHILTJS. 



57. Nemachilus barbatulus (Linn.). Common Loach. 

 Hab. British fresh waters. 



Genus MISGTJRNUS. 



58. Misgwrnus fossilis (Linn.). Thunder-fish. 

 Hab. Baltic Sea. 



a. Purchased, Nov. 1860. 



Family GYMNOTID^E, 

 Genus GYMNOTUS. 



59. Gymnotus electricus, Linn. Electric Eel. 

 Hab. British Guiana, 



