162 EVENINGS AT THE MICEOSCOPE. 



having its front edge hollowed out with two deep 

 notches, the central piece between them itself notched 

 at its tip. Immediately above this notched central 

 tooth (I speak of the relative position of the parts, sup- 

 posing the insect to be crawling on the ground, without 

 reference to the Avay in which we turn it about on the 

 microscope), and united with it, there is a sort of solid 

 square pedestal, on which stand a pair of jointed or- 

 gans, and between them an oblong horny plate rounded 



MOTTTH or SEETLE, 



{Seen from l>eneath.) 



«, upper lip ; i, mandibles ; c, maxillfe ; d, maxillary palpi ; 6, tongue ; /, labial 



palpi ; g, cbin. 



at the tip, where it bears two bristles. This latter is the 

 tongue ; while the jointed organs on each side are 

 called feelers,— j>alpi ; though this is a begging of the 

 question, for we do not really know the function of 

 these organs. The chin, the tongue (Jiguld), and these 

 palpi, constitute together the under lip. 



