THE HEAD OF THE BEE AND ITS APPENDAGES. 43 



4. THE PROBOSCIS. 



The conspicnons group of month apiDendages in the honey bee, 

 forming what is commonly known as the proboscis (fig. 9 A, Prh), 



Hr- 



Fig. 15. — Mouth parts of the worker: A, tip of s'l"ssn, showiui:- laliellum (Lhl), guard 

 hairs (Hr), and ventral groove (A:); P., same, from above; (', small piece of glossal 

 rod ()-) with adjoining parts of walls ( r/ 1 of glossal canal attached, showing ventral 

 channel (0 guarded liy rows of hairs. I), parts forming the proboscis, labium in middle 

 and maxilla; at sides, flattened out, ventral view ; li, cross section of glossa showing its 

 invnginated channel (hum) and position of rod (r) along its dorsal wall, and likewise 

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

 mentum (Mt) and bases of ligula [Ly) and labial palpi (IJtPlp), showing opening 

 of salivary duct (SalDO), dorsal view; G, lateral view of proboscis showing parts on 

 left side; II, lateral view of glossa (Gls) with its rod (y ) torn away at base showing 

 attachment of retractor muscles {211 Mel). 



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

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



