. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. Fig. 66. Head of humbh-bec iafter Herm. Muller). (i) Hcaii of Bombus agroram F. ?, with completely extended and widely separated mouth-parts; seen from above (x 5). (2) of the honey-bee in the same condition; seen from below (x 12). //', The two basal joints of the labial palps, which are modified to form part of the ligular sheath ; w, the membranous lappets at the tip of the ligula; x^ the piece which co\crs the mouth-opening, which lies betwee
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. Fig. 66. Head of humbh-bec iafter Herm. Muller). (i) Hcaii of Bombus agroram F. ?, with completely extended and widely separated mouth-parts; seen from above (x 5). (2) of the honey-bee in the same condition; seen from below (x 12). //', The two basal joints of the labial palps, which are modified to form part of the ligular sheath ; w, the membranous lappets at the tip of the ligula; x^ the piece which co\crs the mouth-opening, which lies between mt and x (epipharynx, Westwood); y, submentum, the chitinous piece which lies at the base of the mentum, and continues it backwards (fulcrum, Kirby) ; z~, retractors, chitinous pieces which unite the submentum with the ends of the cardtnes, cc, and, as they revolve backwards round the ends of the cardines, retract the mentum and all its appendages (Kirby calls zz: cardines, and cc lora). 'The sucking of nectar,' says Hermann Miiller ('Wechselbeziehungen,' pp. 29, 30), ' is prejudiced to an unknown extent by an imperfection in the adaptation, i. e. the character of the nectar can only be recognized after the entire space between the hairy ligula and its sheath has been filled with fluid, and this has risen as far as the taste-organs. Should it then appear to the bee that the nectar is not agreeable, sucking may cease, but this will not get rid of the layer adhering to the whorls of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Knuth, Paul, 1854-1899; Knuth, Paul, 1854-1899; Mu?ller, Hermann, 1829-1883; Ainsworth Davis, J. R. (James Richard), 1861-1934. Oxford : Clarendon Press
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisheroxfor, bookyear1906
