chap, xx.] FISHES. 439 



Mexico to La Plata ; Mesonauta (1 sp.), Brazil ; Petenia (1 sp.), 

 Lake Peten, Guatemala ; Uaru (2 sp.), Brazil ; Hygrogonus 

 (1 sp.), Brazil ; Cichla (4 sp.), Equatorial America ; Crenicichla 

 (9 sp.), Brazil and Guiana ; Chcetobranchus (3 sp.), Brazil and 

 Guiana ; Mesops (2 sp.), Brazil ; Satanoperca (7 sp.), Amazon 

 Valley and Guiana ; Geophagus (1 sp.), North Brazil and Guiana ; 

 Symphysodon (1 sp.), Lower Amazon; Pterophyllum (1 sp.), 

 Lower Amazon. 



Order III.—ANACANTHINI. 



Family 53.— GADOPSID^E. (1 Genus, 1 Species.) 



" Fresh-water fish, with rather elongate body covered with very 

 small scales, the upper jaw overhanging the lower, forming an 

 obtuse snout." 



Distribution. — Eivers of Australia and Tasmania. 



Family 53a.— LYCODID.E. (3 Genera, 14 Species.) 



"Marine fishes, with elongate bodies, and the dorsal united 

 with the anal fin." 



Distribution. — Arctic seas of America and Greenland, and 

 Antarctic seas about the Falkland Islands and Chiloe Island. 



Family 54.— GADID^E. (21 Genera, 58 Species.) 



"Marine fishes, with more or less elongate bodies covered 

 with small smooth scales." 



Distribution. — Cold and temperate regions of both hemi- 

 spheres ; in the North extending as far south as the Mediterranean, 

 Canary Islands, New York and Japan (and one species to the 

 Philippines and Bay of Bengal), and in the South to Chili and 

 New Zealand. 



Gadus (Cod), Merluccius (Hake), Phycis, Lota, Molva, Couchia, 

 Motclla, and Raniceps, are British. Lota inhabits fresh waters. 

 Vol. II.— 29 



