. Handbook of zoology with examples from Canadian species, recent and fossil [microform]. Zoology; Invertebrates; Zoologie; Invertébrés. ated loid) ther :oid) elled /erte- i not well- ion in vhoUy 3 con- j exca- nected n only, ban in \eart of ves the ,s it to Is, and out re- Q sides larches, rranged [ntering )ladder le body rUOVINCK VKRTKl'.RATA. 243 in the water, and, in some fishes, aids as a rudimentary lung in the a3eration of the blood. 'I'hc viscera in fishes arc placed on the anterior i)art of the body, so as to leave space behind for the great nuiscies which bend the tail in the proces
. Handbook of zoology with examples from Canadian species, recent and fossil [microform]. Zoology; Invertebrates; Zoologie; Invertébrés. ated loid) ther :oid) elled /erte- i not well- ion in vhoUy 3 con- j exca- nected n only, ban in \eart of ves the ,s it to Is, and out re- Q sides larches, rranged [ntering )ladder le body rUOVINCK VKRTKl'.RATA. 243 in the water, and, in some fishes, aids as a rudimentary lung in the a3eration of the blood. 'I'hc viscera in fishes arc placed on the anterior i)art of the body, so as to leave space behind for the great nuiscies which bend the tail in the process of swimming. Fishes are dioecious and oviparous, producing great numbers of ova or spawn. The ovary of the cod is said to contain more than a million of Fijf. 292.~Dbvblopmrxt ok Salmon. 1—Ovum. 2—Embryo, with yolk attached. 3—Embryo, after absorption of yolk. 4—Young Parr. The class Pisces, in its widest sense, includes the following orders :— Order 1.—Pharyngohranchii. This order includes only two known species, the Amphioxus or Lancelet (Fig. ), and an Australian fish {Epigonichihys). The Amphioxus is of the greatest possible interest as illustrating the simplest condition of Vertebrate life. Some zoologists are disposed to put this animal into a. 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 Dawson, J. W. (John William), Sir, 1820-1899. Montreal : Dawson
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