Guide to the study of insects and a treatise on those injurious and beneficial to crops, for the use of colleges, farm-schools, and agriculturists . a lid of earth coveredbeneath with silk. Mygale avicularia Linn., the Bird spider,seizes small birds and sucks their blood. M. Hentzii (, natural size) ranges from Missouri southward. , DiPNEUMONES Latreille. In the remaining genera of spidersthere are two lung-sacs, two or four stigmata, and three pairs. Fig. 027. of spinnerets. The} are divided into two groups, the Sed°entary and Wandering spiders. The sedentary specieshave the ocelli us
Guide to the study of insects and a treatise on those injurious and beneficial to crops, for the use of colleges, farm-schools, and agriculturists . a lid of earth coveredbeneath with silk. Mygale avicularia Linn., the Bird spider,seizes small birds and sucks their blood. M. Hentzii (, natural size) ranges from Missouri southward. , DiPNEUMONES Latreille. In the remaining genera of spidersthere are two lung-sacs, two or four stigmata, and three pairs. Fig. 027. of spinnerets. The} are divided into two groups, the Sed°entary and Wandering spiders. The sedentary specieshave the ocelli usually arranged in two transverse rows ; theyspin webs in which thej remain and seize theii* prey. In the DIPNEUMONES. 649 genus Dysdera there are six ocelli, of which four lie in the frontrow ; the cephalotliorax is small, long, oval, and the first pairof legs are the longest. The species dwell in silken tubes,under stones or in crevices. D. interrita Ilentz is a NewEngland species. In Drassus there are eight ocelli, and thehindermost pair of feet are the longest. Clubione includes those species which have eight ocelli, thefour hinder ones, with the two outer ones on the front row,forming almost a semicircle ; the fore legs are the construct under the bark of trees, under leaves or be-neath stones, tubes of very white silk, from which they makenocturnal expeditions for food. C. tranquUla Hentz is com-mon in the United States. C. inedicin
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectinsects
