A text-book of entomology, including the anatomy, physiology, embryology and metamorphoses of insects, for use in agricultural and technical schools and colleges as well as by the working entomologist . Kic. 194. — Stinj; of bee x Ho times: A, sting- separated from Its muscles; JIH, poison sac ; jiy. poison jfkind ; illi (/, .tli abdominal iraii^rlinn : n, H, nerves; c, external thin membrane joiningstiiifr to last iihdoininul segment ; /. /, /. :in<l /, X1, /. levers to move the darts; *//. sheath; /,vulva : ji, stin^r-pul]ius or leeler, with tactile hairs and nerves. Ji and (. seetions th
A text-book of entomology, including the anatomy, physiology, embryology and metamorphoses of insects, for use in agricultural and technical schools and colleges as well as by the working entomologist . Kic. 194. — Stinj; of bee x Ho times: A, sting- separated from Its muscles; JIH, poison sac ; jiy. poison jfkind ; illi (/, .tli abdominal iraii^rlinn : n, H, nerves; c, external thin membrane joiningstiiifr to last iihdoininul segment ; /. /, /. :in<l /, X1, /. levers to move the darts; *//. sheath; /,vulva : ji, stin^r-pul]ius or leeler, with tactile hairs and nerves. Ji and (. seetions through the dartsand sheatli, x :ioo times: x/i. shealli: . end of a dart,x Jini: , <;. opi-iiiiif,s for poison to escape into the wound. — After Cheshire. THE STRUCTURE OF THE BEES STING 175 make attachment to two levers (?, *). The levers (k, I and k, Z) are providedwith broad muscles, which terminate by attachment to the lower segments ofthe abdomen. These, by contraction, revolve the levers aforesaid round thepoints /, /, so that, without relative movement of rod and groove, the points. FIG. 195. — Details of sting of bee : E, darts, sheath, and valves ; pb, poison-bap duct; fo, fork ;.9, slide piece ; ra, valve ; b, barbs. f\ terminal abdominal segments ; ir, workers sting; tj, queensstinir: /. r, anal plate: £, sting1 entering skin: ,s/(, >heatli: . c. in first, second, andthird thrusts with the sting. //, portion of poison gland, x 3nn ; ,-n. cell nucleus; », nerve; g,sranirlionic cell. 7, portion of the poison gland, cells removed; cd, central duct; d, individual smallducts: jir. tunica propria. A, gland of Fni-nti,-n niftt : eft. central duct; <7, small ducts; KC,secreting1 cells. L, valve and support; t, trachea; T<I, valve; tr, truss or valve-prop.—AfterCheshire. 176 TEXT-BOOK OF ENTOMOLOGY c, c approach each other. The arms of the Y straighten and shorten, so thatthe sheath and darts are driven from their hiding-place together and the
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectinsects
