Archive image from page 327 of American spiders and their spinning. American spiders and their spinning work. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits CUbiodiversity1121211-9742 Year: 1889 ( 328 AMERICAN SPIDERS AND THEIR SPINNINGWORK. weavers. If we turn to the Tubeweavers we find a varied and interesting field of spinning industry in the making of snares, nests, and cocoons. In all of these it may be confidently said that the methods, as far as known, are substantially the same as those described as prevail- ing in
Archive image from page 327 of American spiders and their spinning. American spiders and their spinning work. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits CUbiodiversity1121211-9742 Year: 1889 ( 328 AMERICAN SPIDERS AND THEIR SPINNINGWORK. weavers. If we turn to the Tubeweavers we find a varied and interesting field of spinning industry in the making of snares, nests, and cocoons. In all of these it may be confidently said that the methods, as far as known, are substantially the same as those described as prevail- ing in other tribes. A few illustrations show this fact. The interesting and well known water spider ®ij⢠of Europe, Argyroneta aquatica, weaves in water a bell shaped tent (Fig. 314), within which she dwells, deposits her egg sac, and rears her young. The following observation indicates Pio. 814. The bell shaped that even in this seemingly unnatural element the thf wate/Ider°under amc general method characterizes the spider's weav- '- ing. Fig. 315 represents a patch of spinningwork made by this water spider upon a glass within which she was confined, and drawn by Mr. Underbill, i On examining the central part of this patch, it appeared, both to the naked eye and to the microscope, like a piece of the spider's cocoon. Certain broad threads at the edge of the patch at once explained the method by which this close and Zz® even texture was obtained. They are represented by Fig. 315, c, Snider appeared under the microscope. They seem to have been produced, as in the cases above described, by the spider erecting or placing, parallel to one another, a series of spinning tubes, which emitted separate and parallel threads, instead of lines directed towards one point. These bands Mr. Underbill supposed to be the product of the anterior spinnerets, while the other two threads, a and B, are emitted by the posterior and middle spinnerets. When Agalena noevia wishes to extend the b
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