THE HEAD OF THE BEE AND ITS APPENDAGES. 

 4. THE PROBOSCIS. 



43 



The conspicuous group of mouth appendages in the honey bee, 

 forming what is commonly known as the yroboscis (fig. 9 A, Prb), 



Fig. 15. — Mouth parts of the worker: A, tip of glossa, showing labellum (TJbV), guard 

 hairs (S"r), and ventral groove (fc) ; B, same, from above; C, small piece of glossal 

 rod (>•) with adjoining parts of walls (or) of glossal canal attached, showing ventral 

 channel (!) guarded by rows of hairs. D, parts forming the proboscis, labium in middle 

 and maxillas at sides, flattened out, ventral view ; B, cross section of glossa showing its 

 invaginated channel (Lum) and position of rod (r) along its dorsal wall, and likewise 

 position of channel (I) of rod along median line within the glossal channel ; F, end of 

 mentum (.Mt) and bases of ligula (Liji and labial palpi (LliPlp), showing opening 

 of salivary duct {SaWO), dorsal view; G, lateral view of proboscis showing parts on 

 left side; H, lateral view of glossa (GJs) with its rod (r) torn away at base showing 

 attachment of retractor muscles {2BMcl). 



by means of which the bee takes up liquid food, consists of what cor- 

 respond with the maxillse and the labium of insects that feed on solid 



