. American spiders and their spinningwork. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits . nary observer of the cobwebs, for the most part madeby Theridioids, which form the bulk of those infesting the angles of thewalls of our stables and outbuildings. Thus our first connecting link be-tween the spinningwork of Orbweavers and Lineweavers is established at thetypical web of the latter, as shown in the snares of the family second link, which itself constitutes in the web of the Basilica spidera complete interb
. American spiders and their spinningwork. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits . nary observer of the cobwebs, for the most part madeby Theridioids, which form the bulk of those infesting the angles of thewalls of our stables and outbuildings. Thus our first connecting link be-tween the spinningwork of Orbweavers and Lineweavers is established at thetypical web of the latter, as shown in the snares of the family second link, which itself constitutes in the web of the Basilica spidera complete interblending of the groups, is seen at the snares of the Linyi»hi-oida?. The genus Linyphia is one of the largest and most impor-LinvDhia *^^^ ^^^^E the Lineweaving genera. In order to show the steps bywhich the two groups approach each other in habits, some expla-nation of the spinningwork of the Linyphians is necessary. Their web differsfrom that of the Theridioids substantially in the addition of a sheetlikeweb to the web of intersecting lines. Indeed, the lines take a subordinateor subsidiary place, and the sheet a^jpears to be the real snare. There are. Fig. 156. The bowl shaped web of Linyphiacommunis. HORIZONTAL SNARES AND DOMED ORBS. 167 three common variations of the form: First, a plain sheet of thin silkattached to the under part of leaves or suspended between branches as inthe webs of Linj^ihia costata. Second, the snare of L. communis, representedat Fig. 156. It has a mass of right lines, r, to which is suspended a bowllike sheet, b, beneath which again is a dish shaped sheet, d, of more openspinningwork with the concavity upward, as in the bowl. The snare fromwhich tills figure was drawn had a total height of from twelve to fourteeninches. The diameter of the bowl was fromsix to seven mches, its depth one and a halfto two inches. Linyphia communis hangs inverted to thelower surface of her bowl, and is thus pro-tected from assaults by the underlying flooror dish or cur
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