. The animans and man; an elementary textbook of zoology and human physiology. FIG. 75. The dog- or wood-tick, Dermacentor americanus, male, the mostabundant tick in the Northern States. (Natural size indicated byline; after Osborn.) their habits, viz., the wandering or hunt-ing spiders, which do not spin webs tocatch their prey, and the sedentary orweb-weaving spiders, which spin snares tocatch their prey. The wandering spiderscan spin silk, however, and often do so toline their burrows, to make nests, orto make egg-sacs. The hairy tarantulasand the trap-door spiders of similar appear-ance ar
. The animans and man; an elementary textbook of zoology and human physiology. FIG. 75. The dog- or wood-tick, Dermacentor americanus, male, the mostabundant tick in the Northern States. (Natural size indicated byline; after Osborn.) their habits, viz., the wandering or hunt-ing spiders, which do not spin webs tocatch their prey, and the sedentary orweb-weaving spiders, which spin snares tocatch their prey. The wandering spiderscan spin silk, however, and often do so toline their burrows, to make nests, orto make egg-sacs. The hairy tarantulasand the trap-door spiders of similar appear-ance are among the most interesting of thehunting spiders. They live in verticalburrows or tunnels in the ground which. FIG. 76. Theeyes andmandibles ofa spider.(Much e n -larged; afterJenkins andKellogg.) ARTHROPODS AND MOLLUSCS 167 are lined with silk, and which in the case of the trap-door spider are covered with a door or lid madeof silk and soil. The top of this door is always coveredwith soil or bits of leaves or twigs so that it is nearly indis-tinguishable from the surface of the ground about it. The common rather large swift black spiders found understones and boards arehunting spiders, be-longing to the familyLycosidae and are call-ed the running live in burrows FlG 77in the ground, comingout to stalk and chase
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