. An introduction to zoology [microform] : for the use of high schools. Zoology; Zoologie. 06 HIOII SCHOOL ZOOLOGY. rocognizod, the Fercina (including the common perch \Peroa aniericana] and tlio larger Pike-Porches or Pickerels [Stizosted- ium] us they are generally called in Ontario, and the Etheostom- atina or Darters. The pickerels attain a greater size than the perch, and are valued food-fishes. Tho larger species, S. vitreum has three pyloric coeca, its fin formula is —I, 21; , 12, while tho smaller S. canadense (Fig. 34) has 4-7 cceca, and the soft dorsal is shorter by three r
. An introduction to zoology [microform] : for the use of high schools. Zoology; Zoologie. 06 HIOII SCHOOL ZOOLOGY. rocognizod, the Fercina (including the common perch \Peroa aniericana] and tlio larger Pike-Porches or Pickerels [Stizosted- ium] us they are generally called in Ontario, and the Etheostom- atina or Darters. The pickerels attain a greater size than the perch, and are valued food-fishes. Tho larger species, S. vitreum has three pyloric coeca, its fin formula is —I, 21; , 12, while tho smaller S. canadense (Fig. 34) has 4-7 cceca, and the soft dorsal is shorter by three rays. Like the perch the picker- els have a good deal of brilliant yellow colouring on the sides and are called " dordes " in the Lower Province. m i ii:';'. Fijf. 34.—The Pickerel. Stizostedium canadenae. |. (U. S. F. C.) « 19. Little is known with regard to the distribution of the Darters in Ontario. They are a characteristic American group, being amongst the smallest of the Fishes, and distinguished further by their bright colours, rapid movements, large fins, and the rudimentary condition, of the pseudobranchs and air- bladder. Some of them conceal themselves under sand, the eyes alone remaining uncovered, tho better to pounce rapidly upon the active insect larvae on which they feed. The largest of the group, the Log-Perch (^Percina caprodes), attains a length of 6-8 inches, and may be reco^auzed by its black, banded sides, the smaller forms are the Saud-dartei (Ammocrypta), Tesselated darter (Boleosoma) and the Striped darter (Etheostoma). 20. Among the marine tamilies allied to the above that of the Serranidse requires mention. It embraces the so called Sea- I. 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 Wright, R. Ramsay (Robert Ramsay), 1852-1933. Toronto : Copp, Clark
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectzoology
