First lesson in zoology : adapted for use in schools . Fia. W\.—Eurypharynx pelecanoides. having six pairs of internal branchial slits, and consequentlyfive pairs of giUs. A similar form lives off New York atgreat depths. The Pouts and Catfish.—The horned pout (Amiurus. Fia. 163.—Young Alius, with its yolk-sac, probably taken from the mouth of its male parent. atrarius) lays its eggs in holes in gravel during midsum-mer. The Great-Lake catfish is sometimes a yard in certain Siluroid fish in tropical seas, as Arius (), the eggs are carried by the males in their mouth, fromfive
First lesson in zoology : adapted for use in schools . Fia. W\.—Eurypharynx pelecanoides. having six pairs of internal branchial slits, and consequentlyfive pairs of giUs. A similar form lives off New York atgreat depths. The Pouts and Catfish.—The horned pout (Amiurus. Fia. 163.—Young Alius, with its yolk-sac, probably taken from the mouth of its male parent. atrarius) lays its eggs in holes in gravel during midsum-mer. The Great-Lake catfish is sometimes a yard in certain Siluroid fish in tropical seas, as Arius (), the eggs are carried by the males in their mouth, fromfive to twenty being thus borne about until the young hatch. THE BONY FISHES. 159 They are probably caught up after exclusion and fertiliza-tion. Some of these eggs are half an inch in diameter. In Aspredo (Fig. 163) the eggs are attached to the out-side of the body by slender stalks. The Order of Teleocephali (cod, perch, trout, etc.)comprises most of the bony fishes; and they are, on thewhole, the most perfectly deyel-oped of all fishes. Beginning with the lowerkinds, we have thie electrical eel{Oymnotus elect rims Linn.) ofSouth America, which is twometres in length, and is charac-terized by its greatly-developedelectrical batteries. These arefour in number, sit
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1894
