. Outlines of zoology. Fig. 179.—Nervous system of bee.—After Cheshire. A, of larva. B, of adult. «., Antenna; mx.^ maxilla; m.^ mandible ;w., origin of wing; 1-5, abdominal ganglia. pairs of abdominal ganglia, but in the queen and droneonly four. The sense organs are the simple and compoundeyes, and the antennae, which are furnished with numeroussensitive structures. Alimentary system.—The oesophagus is a narrow tubewhich runs down the thoracic region. In the abdominalregion it expands into the crop or honey-sac. The cropopens by a complicated orifice, with a remarkable stopper 336 PHYLUM ART
. Outlines of zoology. Fig. 179.—Nervous system of bee.—After Cheshire. A, of larva. B, of adult. «., Antenna; mx.^ maxilla; m.^ mandible ;w., origin of wing; 1-5, abdominal ganglia. pairs of abdominal ganglia, but in the queen and droneonly four. The sense organs are the simple and compoundeyes, and the antennae, which are furnished with numeroussensitive structures. Alimentary system.—The oesophagus is a narrow tubewhich runs down the thoracic region. In the abdominalregion it expands into the crop or honey-sac. The cropopens by a complicated orifice, with a remarkable stopper 336 PHYLUM ARTHROPODA. arrangement, into the digestive region or chyle stomach,whicii is separated by a pylorus from the coiled smallmtestine. The inner wall of the small intestine bearsnumerous rows of chitinous teeth set in longitudinal ridges,and is perforated by the apertures of the excretory the junction of the small with the large intestine thereare six brownish plates, perhaps functioning as Fig. i8o.—Food canal of after Cheshire. -In ?«jir., Maxilla; a., antenna; e., eye; ^salivary glands; oe., cesophagus; ,honey-sac; ^., stopper; , chylificstomach ; w:./., Malpighian tubules ; ,small intestine; /.z., large intestine; sting. In connection with the anteriorregion of the gut there is a verycomplicated series of we have, in the workersonly, on either side of the head,a long coiled gland which isintracellular in type. It i; largestin the so-called nurses whichfeed the young, and diminishesin size later. According to , this gland secretes anitrogenous fluid which is fur-nished to all the larva; in theirearly stages, but is supplied tothe future queen during thewhole of the feeding period, andalso during the period of egg-laying ; this secretion was form-erly termed royal jelly. Inaddition to this pair of glands,there are in the worker threeother gland systems. Ofthese,the second and third pairs havea co
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Keywords: ., bookcentury1900, bookdecade1910, bookidcu3192, booksubjectzoology
