Guide to the Crustacea, Arachnida, Onychophora and Myriopoda exhibited in the Department of Zoology, British Museum (Natural History) .. . ng inEurope, North Africa, Japan, Burma, and Java ; whilst Calommatais found in Japan, Burma, the Sunda Islands, and West Africa. The only Mygalomorph spiderwhich occurs in this country (Ati/pusaffi)iis) belongs to this family. It isfound in the South of England, theChannel Islands, and also in Ireland,and many places on the nest of this spider consists of along burrow, excavated in the ground,and lined throughout with web. Thislining is conti
Guide to the Crustacea, Arachnida, Onychophora and Myriopoda exhibited in the Department of Zoology, British Museum (Natural History) .. . ng inEurope, North Africa, Japan, Burma, and Java ; whilst Calommatais found in Japan, Burma, the Sunda Islands, and West Africa. The only Mygalomorph spiderwhich occurs in this country (Ati/pusaffi)iis) belongs to this family. It isfound in the South of England, theChannel Islands, and also in Ireland,and many places on the nest of this spider consists of along burrow, excavated in the ground,and lined throughout with web. Thislining is continued beyond the surfaceas a long closed tube, which is eitherattached to some object near at handor lies loosely on the surface of theground; when flies or other insectsalight on it they are seized from withinby the spider, and pulled through the silk, the rent thus madebeing repaired afterwards. Similarly, the male enters the burrowby biting a hole in the wall of the tube. A number of the external tubes of the North American purse-web spider {Atj/jnis abboti), which are spun against the trunk of atree, are exhibited in Wall-case Fic4. 61. Atijpua affinis. Wall-case No. 7. Table-caseNo. 23. Tribe ii.—Arachnomorphae. In these spiders the outer branches of the anterior pair ofspinning appendages and both the outer and inner branches ofthe posterior pair are present, the inner branches of the anteriorpair being often represented by a perforated spinning-plate (the cribellum ) or by a membranous lobe (the colulus ). In thespiders in which the cribellum is present, the penultimate joint ofthe fourth leg is always furnished with a series of curved hairs. Thechelicerae project downwards. The posterior pair of pulmonarysacs is replaced (except in the genus Hypochilus) by tracheal tubes,the stigmata of which may be situated immediately behind those of Araneae. 97 the anterior pulmonary sacs, Init more usually unite to form a Table-casocommon aperture in front of the spinning appen
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectcrustacea, bookyear19
