. The animals and man; an elementary textbook of zoology and human physiology. Zoology; Physiology. i66 THE .ANIMALS AND MAN many silk-glands in the abdomen, from each of which a fine duct runs to a spinning-tube. The spiders may be divided into two groups according to-. FiG. 75. The dog- or wood-tick, Dermacentor americanus, male, the most abundant tick in the Northern States. (Natural size indicated by line; after Osbom.) their habits, viz., the wandering or hunt- ing spiders, which do not spin webs to catch their prey, and the sedentary or web-weaving spiders, which spin snares to catch the
. The animals and man; an elementary textbook of zoology and human physiology. Zoology; Physiology. i66 THE .ANIMALS AND MAN many silk-glands in the abdomen, from each of which a fine duct runs to a spinning-tube. The spiders may be divided into two groups according to-. FiG. 75. The dog- or wood-tick, Dermacentor americanus, male, the most abundant tick in the Northern States. (Natural size indicated by line; after Osbom.) their habits, viz., the wandering or hunt- ing spiders, which do not spin webs to catch their prey, and the sedentary or web-weaving spiders, which spin snares to catch their prey. The wandering spiders can spin silk, however, and often do so to Fig. 76. The line their burrows, to make nests, or to make egg-sacs. The hairy tarantulas and the trap-door spiders of similar appear- ance are among the most interesting of the. 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; McCracken, Mary Isabel. New York, H. Holt and Company
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Keywords: ., bookcentury1900, bookd, booksubjectphysiology, booksubjectzoology
