American spiders and their spinningworkA natural history of the orbweaving spiders of the United States, with special regard to their industry and habits . feitilizing fluid is forced into its properreceptacle. Various naturalists have been able to estab-lish this fact. Menge .has observed, in the cases of Lin-yphia, Agalena, and Lycosa, this fluid collected fromthe sheet like spinningwork.^ Mr. Campbell, in the case of Tegenaria guyonii abovecited, was able to confirm this account. It was only dur-ing the last moments of the process that reflected lightpermitted him to see a triangular silken
American spiders and their spinningworkA natural history of the orbweaving spiders of the United States, with special regard to their industry and habits . feitilizing fluid is forced into its properreceptacle. Various naturalists have been able to estab-lish this fact. Menge .has observed, in the cases of Lin-yphia, Agalena, and Lycosa, this fluid collected fromthe sheet like spinningwork.^ Mr. Campbell, in the case of Tegenaria guyonii abovecited, was able to confirm this account. It was only dur-ing the last moments of the process that reflected lightpermitted him to see a triangular silken sheet attachedto the spider behind the abdominal sexual organ by itsapex, and by its external angles to the mesh (upper). Epeiratri- t^c bottlc in which the araucad Mas confined. Thevittata. Epeira sheet cxtcndcd from under the abdomen to the anteriormagnified. (After Em- P^rt of the stemum, and lay above the palps. The male« now left the sheet and approached the female; but she appeared heedless of his addresses. The observer seized him, and in hisattempts to evade capture he injured the silken sheet. An examination. Digital joints of males. Preussische Spinnen. COMPARATIVE VIEWS OF VARIOUS MATING HABITS. 73 showed that the sides consisted of many shreds (Fig. 37, A), while theintervening space was covered with an irregular mesh, which was doubtlessoriginally more systematically arranged. Here and there was a mass ofsemen containing a fine, granulated substance (Fig. 37, B) of great refract-ive power. The whole was in a very liquid state, and spermatozoa werearranged singly above the threads. Immediately after the spider was secured, one of its palps was vesiculum seminis was charged with spermatozoa, even to the embolos,where they were plainly seen at intervals. He could not, however, discoverany on the external parts of the palpus. Menge is entitled to the creditof discovering the relation between the male palpus and the male abdom-inal sexu
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectspiders, bookyear1890
