. 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. Spiders. 344 AMERICAN SPIDERS AND THEIR SPINNINGWORK. to thicken that portion of her snare in which she hangs back downward. This is a most natural action, resulting from several facts. First, as she passes from her resting point to the various parts of her snare in which insects are entangled, she spins out an anchorage for the dragline, by which she is sure to connect herself to this roosting spot. Again, when she returns with her pre
. 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. Spiders. 344 AMERICAN SPIDERS AND THEIR SPINNINGWORK. to thicken that portion of her snare in which she hangs back downward. This is a most natural action, resulting from several facts. First, as she passes from her resting point to the various parts of her snare in which insects are entangled, she spins out an anchorage for the dragline, by which she is sure to connect herself to this roosting spot. Again, when she returns with her prey, she swings her abdomen around several times, before finally settling for her banquet, and at each time she ejects a similar jet of silk and unites the thickened spots by a little thread. (See Fig. 59, page 61.) Still further, in her restless movements back and forward over her web, around this central roost, she throws out sim- ilar anchorages and lines. Thus, this spot and its vicinity in a little while become much thicker than the surrounding portions of the Fig. 335 Linyphia s snare among the morn ng glories Here, now, we have the germ of the typical snare of the genus Liny- phia. In point of fact, it consists, as I have already shown (Chap- ter IX.), of a sheet like bit of spinningwork, whose fibres are From very open, or, as one might otherwise express it, of a netted . ^" " sheet of spinningwork, whose meshes are very close. Our origi- Linyphia ^'"^^ snare of irregularly crossed lines has thus advanced a step toward a meshed sheet like snare. In many species of the genus Linyphia the snare is simply a netted sheet, more or less horizontal, having outgoing straight lines, which support it above and below. It thus very. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original McCook, Hen
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectspiders, bookyear1889
