34 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 



65 



of the same kind are found at the base of each paraglossa on the 

 dorsal side. About 35 hairs are present on each cervical plate, the 

 most of them being the ones marked c 10 . This plate is a heavy chitin- 

 ous structure on the " throat " of the bee (figs. 9 C and 10, CvPl), 

 and the writer has called it the " cervical " plate on account of its 



Fig. 7.— -Diagram of mouth-parts of a worker honey bee spread out fiat, 

 showing disposition of innervated hairs (61, b*, U to c T , Cu to Cis, ex and /) and 

 olfactory pores (Por), on dorsal surfaces of glossa (Gls), paraglossa (Pgl), 

 palpigers (Pig), mentum (MO, and labrum (Lm), on inner surfaces of labial 

 palpi (LbPlp), and on outer surfaces of maxillae (Mx) and mandibles (Md), 

 x 25. All the hairs shown are innervated, and the pseudo-hairs on the glossa 

 have been omitted. See page 54 for other abbreviations. 



position. It has two deep folds, in the anterior one (fig. 9 C and 

 10, F) of which may be seen the tactile hairs (c s to c 10 ) and olfactory- 

 pores (Por). A few scattered, innervated hairs were found just 

 inside the buccal cavity, a few on the side of the head and a few on 



