American spiders and their spinningworkA natural history of the orbweaving spiders of the United States, with special regard to their industry and habits . and its base or the serrated valve near the base of the thoraxwas rubbed upon. The female of the species does not possess these or- Mr. F. Maule Campbell - has taken up these observations of Westring, and in a valuable and interesting paper added much to our information. He made special studies, both of the male and female of Stea- Stridula- ^^gda guttata and Steatoda biiiunctata. In the fore extremitv of j? j^^ the abdomen he found, in the
American spiders and their spinningworkA natural history of the orbweaving spiders of the United States, with special regard to their industry and habits . and its base or the serrated valve near the base of the thoraxwas rubbed upon. The female of the species does not possess these or- Mr. F. Maule Campbell - has taken up these observations of Westring, and in a valuable and interesting paper added much to our information. He made special studies, both of the male and female of Stea- Stridula- ^^gda guttata and Steatoda biiiunctata. In the fore extremitv of j? j^^ the abdomen he found, in the male of Guttata, that the socketridioids. , . , . , . is a complete ring with some strong chitmous spurs on the in-side of its external edge (Fig. 299), which is also roughly serrated. Thatof the female is divided into two parts, the inferior being smallest, whilethe superior, as in the male, is the deepest. In the female (Fig. 298)there are no spurs. The inner edge, however, is undulated, and in pointsbecomes angulated, while a little below are stiff hairs on small protuber-ances. The chitinous tlioracic of the male is marked on its.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectspiders, bookyear1890
