Check List of the Vertebrates of Ontario and Catalogue of Specimens in the Biological Section of the Provincial Museum

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Excerpt from Check List of the Vertebrates of Ontario and Catalogue of Specimens in the Biological Section of the Provincial Museum: FishesSkeleton cartilaginous, the skull imperfectly developed, not separate from the vertebral column. No true jaws, no limbs, no shoulder girdle, no pelvic elements, no ribs. Gills in the form of fixed sacs, without branchial arches, six or more in number on each side. Nostril single median. Mouth sub-inferior, suctorial, more or less circular. Heart without arterial bulb. Alimentary canal straight, simple, without cecal appendages, pancreas, or spleen. Vertical fins with feeble rays, usually continuous round the tail. Naked, eel-shaped animals inhabiting cool waters. They undergo a metamorphosis, the young being often quite unlike the adult.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.