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 n s unac-quainted with ento-mology, is somewhatdangerous, producingalarming nervous dis-orders. Fig. G29 rep-resents Theridion rf-parium (lower figure,male ; upper, female,enlarged), of Europe. Elvira is readilyknown by the largeglobular a b d o m e species are sed-entary, forming a webcomposed of spiralthreads crossed 1 >yother threads depart-ing from the centre ; they often dwell in a tent constructedabove the web ; the cocoons are o
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 n s unac-quainted with ento-mology, is somewhatdangerous, producingalarming nervous dis-orders. Fig. G29 rep-resents Theridion rf-parium (lower figure,male ; upper, female,enlarged), of Europe. Elvira is readilyknown by the largeglobular a b d o m e species are sed-entary, forming a webcomposed of spiralthreads crossed 1 >yother threads depart-ing from the centre ; they often dwell in a tent constructedabove the web ; the cocoons are of various forms. E. vnh/arisHeiitz (Plate 12, fig. 12) is pale gray, with a pitchy black ab-domen, with various winding white marks, and a middle one inthe form of a cross. It spins a regular geometrical web, andis almost domesticated, being found about the outside ofhouses and in gardens. E. domicil forum Hentz is a gray orbrownish species, and is found in dark rooms. The genus Nephila comprises large spiders, with long cylin-drical abdomens. (Fig. 630, natural size) is foundin the Southern States. Dr. B. G. Wilder has given an ac-. Fig. 029. 652 A1IANEINA. count of its habits, and considers its silk, if the spider could bereared in sufficient quantities, as of commercial value. Themales (upper figure) are minute in size, compared with thefemales. The genus Thomisus is characterized by the small size of thecheliceres, and the first and second pair of feet are either thelongest, or the second alone are longest. The species wander \
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Keywords: ., bookcentury1800, bookdecade1870, bookpublishe, booksubjectinsects
