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The Pamphlet Collection of Sir Robert Stout: Volume 6

Order II.—Acanthopterygii Pharyngognathi

Order II.—Acanthopterygii Pharyngognathi.

The inferior pharyngeal bones are coalcsced, with or without a medium longitudinal suture. Part of the rays of the dorsal, anal and ventral fins not articulated, forming spines. Air-bladder without pneumatic duct.