. American spiders and their spinningwork. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits . 48 AMERICAN SPIDERS AND THEIR Fig. 43. Anterior spinneret ofEpeira diademata. (After Un-derbill.) ss, spinning spools;sp, spigot; , pyriform glandswith their ducts, The SpoolsVary. cvlindriciil ^lauil, tlic (Hily larjiiT i;iaiiil wliicli ilis-cliargxs Iktc. On tlu of tliis lioniy coneis attaflied a long yellowish eord or point, uponwliicli strong muscles arc iiiseited in order tonioNe the cone against t
. American spiders and their spinningwork. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits . 48 AMERICAN SPIDERS AND THEIR Fig. 43. Anterior spinneret ofEpeira diademata. (After Un-derbill.) ss, spinning spools;sp, spigot; , pyriform glandswith their ducts, The SpoolsVary. cvlindriciil ^lauil, tlic (Hily larjiiT i;iaiiil wliicli ilis-cliargxs Iktc. On tlu of tliis lioniy coneis attaflied a long yellowish eord or point, uponwliicli strong muscles arc iiiseited in order tonioNe the cone against the spinneret. Mr. Underhill figures the s^igots or large spin-ning tuhes wliich issue upon the posterior andanterior spinnerets. ^ The former are situated uponthe interior margins and are connected with twovery large glands which are doubtless the cylin-drical glands as heretofore described. These spig-ots are shown at Fig. 43 together with a portionof the ducts leading to their appropriate glands(not represejited) which lie below the j)yriformglands. Fig. 44 shows one of these anterior spig-ots, , compared with two .spools ss. of the .samespinneret. Mr. Blackwall announced thefact for the fir
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Keywords: ., bookcentury1800, bookdecade1880, bookidamericanspid, bookyear1889
