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TEXT-BOOK OF ENTOMOLOGY 



ticulated along its free margin. These extend about half-way through the gizzard. 

 They appear to be alternately elevated and depressed during the action of the giz- 

 zard, and to serve to carry on the food to the twelve cutting teeth, with which 

 each ridge is also armed, and which occupy the posterior part of the organ. These 



Digestive canal of the honey-bee: A, horizontal section of the body; fp, labial pal- 



: ; </r. dor- 



FIG. 818. 



pus ; m<e, maxilla ; f, eve ; pro. t, prothora'x ; me,sti. /. mesothorax : >nrttt. t, metafboru ; 



sal vessel ; v, r, ventricles of tin- -aim- ; No. 1, No. 2, No. 8, salivary jrlancl systems ; V*, oesophagus ; 

 g, g, ganglia of chief nerve-chain ; n. IHTVO ; lix, honry-sac ; ]>. petuold stopper or calyx of hom-y- 

 sac or stomach-mouth; C..H, chyle stomach: l>t. urinary tubes; *i, small intestine (ili'uni) ; /. "la 

 mellte or gland-plates of colon," rectal glands ; //', rectum. B, cellular layer of stomach ; yc. gastric 

 n-lls. x -200. C. urinary tube ; fcc, cells ; t, trachea. />, inner layer, with gastric teeth (gt). After 

 Cheshire. 



