CHAP. xx.J • FISHES. 425 



Family 3.— PEECID^. (61 Genera, 476 Species.) 



" Marine or fresh-water carnivorous fishes, with oblong bodies 

 covered with toothed scales." 



Distribution. — Seas, rivers and lakes, of all regions. 



The genera which inhabit fresh-waters are the following : — 

 Perca (3 sp.), inhabits the Nearctic and Palsearctic regions as 

 far south as Ohio and Switzerland ; one species, the common 

 perch, is British. Percichthys (5 sp.), Chili and Patagonia, with 

 one species in Java ; Paralabrax (2 sp.), California ; Zabrax 

 (8 sp.), six species are marine, inhabiting the shores of Europe 

 and North America, one being British, two species inhabit the 

 rivers of the northern United States ; Lates (2 sp.), Nile and 

 large rivers of India and China ; Acerina (3 sp.), Europe, from 

 England to Kussia and Siberia ; Percarina (1 sp.), Eiver Dniester ; 

 Liccioperca (6 sp.), North America and Europe ; Pikoma (2 sp.). 

 North America, Texas to Lake Erie ; Boleosoma (3 sp.), Texas to 

 Lake Superior ; Asp'o (2 sp.), Central Europe ; H^lro (1 sp.), Lake 

 Huron ; Percilia, (1 sp.), Rio de Maypu in Chili ; Centrarchus (10 

 sp.), North America and Cuba ; Bryttus (8 sp.). South Carolina 

 to Texas ; Pomotis (8 sp.). North America, Lake Erie to Texas. 

 Of the exclusively marine genera a species of Polyprion 

 and one of Serranus are British. The latter genus has nearly 

 150 species spread over the globe, but is most abundant in the 

 Tropics. Mesopi'ion is another extensive genus confined to the 

 Tropics. Apogon abounds from the Red Sea to the Pacific, but 

 has one species in the Mediterranean and one in the coast of 

 Brazil. 



Family 4.— APHREDODERID^. (1 Genus, 1 Species.) 



"Fresh- water fish, with oblong body covered with toothed 

 scales, and wide cleft mouth." 



Distribution. — Atlantic States of North America. 



