CHAP. XX.] 
FISHES. 
429 
Family 13.— POLYNEMID^E. (3 Genera, 23 Species.) 
“ Marine or fresh-water fishes, with compressed oblong bodies 
and entire or ciliated scales.” 
Distribution.- — Tropical seas and rivers of both the great 
oceans, but most abundant in the Pacific, 
Family 14.— SPHYRENIDAE. (1 Genus, 15 Species.) 
“Carnivorous marine fishes, with elongate sub-cylindrical 
bodies covered with small cycloid scales.” 
Distribution, — T he warm and tropical seas of the globe. 
Family 15. — TRICHIURIDiE. (7 Genera, 18 Species.) 
“ Marine fishes, with elongate compressed bodies covered with 
minute scales or naked.” 
Distribution. — All the tropical and sub-tropical seas. 
Family 16. — SCOMBRIDiE. (20 Genera, 108 Species.) 
“ Marine fishes, with elongate compressed bodies, scaled or 
naked.” 
Distribution. — All the temperate and tropical oceans. Mostly 
inhabiting the open seas. 
Scomber, (the Mackerel) Thynnus, Naucrates, Zens, Gentro- 
lophus , JBrama, and Lampris, are genera which have occurred in 
the British seas. 
Family 17.— CARANGID^E, (27 Genera, 171 Species.) 
“ Marine fishes, with compressed oblong or elevated bodies 
covered with small scales or naked.” 
Distribution. — All temperate and tropical seas ; some species 
occur in both the great oceans, ranging from New York to Aus- 
tralia. 
Trachurus and Capras are genera which occur in British seas. 
