. Elements of comparative zoology. Zoology. FISHES. 323 to a great extent, since no other forms give such a clear understanding of the characters of the group. Of the several orders, only the Squall, Raise, and Holocephali need mention here. ORDER I.—SQUALI (Sharks). In the sharks the body is more or less cylindrical, and the gill-slits open upon the sides of the neck. About 150. FIG. 122. — Sawfish (Pristis pectinatus). After Goode. FIG. 123.—Common Skate (Raia erinacea). species are known, some, like the dogfish, being small, others reaching an enormous size. Those species which. Please note
. Elements of comparative zoology. Zoology. FISHES. 323 to a great extent, since no other forms give such a clear understanding of the characters of the group. Of the several orders, only the Squall, Raise, and Holocephali need mention here. ORDER I.—SQUALI (Sharks). In the sharks the body is more or less cylindrical, and the gill-slits open upon the sides of the neck. About 150. FIG. 122. — Sawfish (Pristis pectinatus). After Goode. FIG. 123.—Common Skate (Raia erinacea). species are known, some, like the dogfish, being small, others reaching an enormous size. Those species which. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Kingsley, J. S. (John Sterling), 1854-1929. New York, H. Holt and Company
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