Elementary text-book of zoology, tr Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote elementarytextbo01clau Year: 1892-1893 chelicera of Mygale (rcgne animal). K, claw; Gd, poison- gland ; S, poison vesicle. swollen than in the male'at the base (anteriop the trachea?; G, geni- part) of its ventral surface is placed the unpaired tal opening; Sf, Spin- , . , . , c i • i uing mammilla. sexual opening, at the sides or which are the two slit-like apertures of the lung sacs. There is often a second pair of stigmata behind these openings leading e
Elementary text-book of zoology, tr Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote elementarytextbo01clau Year: 1892-1893 chelicera of Mygale (rcgne animal). K, claw; Gd, poison- gland ; S, poison vesicle. swollen than in the male'at the base (anteriop the trachea?; G, geni- part) of its ventral surface is placed the unpaired tal opening; Sf, Spin- , . , . , c i • i uing mammilla. sexual opening, at the sides or which are the two slit-like apertures of the lung sacs. There is often a second pair of stigmata behind these openings leading either into the * Besides the works of C. A. Walckenaer, Treviranus, C. J. Sundevall, T. Thorell. Mengc^och, Duges, Lcbert, etc., compare, E. Claparede, _' Eecherchcs sur 1'evolution des Araignees,' Geneve, 1802; E. Claparede, 'Etudes sur la circulation du sang chez les Aranecs du genre Lycnsc.' Geneve, 1863 : F. Plateau, ' Peclicrcries sur la structure de 1'appareil digestif et sur les phono- menes de la digestion chez les Aranees dipneumones,' Bruxcllcs, 1877.
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