. Elementary textbook of economic zoology and entomology. Zoology; Insect pests. 234 ECONOMIC ZOOLOGY AND ENTOMOLOGY appendages of the head. The head is more or less definitely set off from the rest of the body. The eyes are large and highly developed. The main part of the foot is composed of a series of eight or ten freely movable tentacles or "arms" surrounding the mouth. These arms are provided with numerous sucker-. FIG. 109.—A devil-fish, Polypus a poll yon. (Much reduced.) like discs which enable the animals to hold fast to the rocks or to catch and hold their prey, for they ar
. Elementary textbook of economic zoology and entomology. Zoology; Insect pests. 234 ECONOMIC ZOOLOGY AND ENTOMOLOGY appendages of the head. The head is more or less definitely set off from the rest of the body. The eyes are large and highly developed. The main part of the foot is composed of a series of eight or ten freely movable tentacles or "arms" surrounding the mouth. These arms are provided with numerous sucker-. FIG. 109.—A devil-fish, Polypus a poll yon. (Much reduced.) like discs which enable the animals to hold fast to the rocks or to catch and hold their prey, for they are all carnivorous. The devil-fishes, genus Octopus (Polypus), have only eight arms and so are known as Octopods. These arms or tentacles may attain a length of fifteen feet or more, and with their great sucker-like discs form very effective means of offense or de- fense. The body is sub-spherical and without a shell. Their. 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 Kellogg, Vernon L. (Vernon Lyman), 1867-1937; Doane, Rennie Wilbur, 1871-. New York, H. Holt and company
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