258 



In this insect the piercing organs are two sharp and razor-like 

 instruments (Jig- 114, d, d), placed on each side of the elongated 

 tongue (e), and enclosed in a sheath (c, c), probably formed by 

 pieces representing the mandibles of mandibulate insects. Two 

 palpi or feelers (0, a), and a pair of triangular plates (6, i), com- 

 plete this remarkable apparatus. 



(299.) Another kind of mouth adapted to suction, and which seems 

 to differ more widely from the perfect form than any we have as 

 yet examined, is that which we meet with in moths and butterflies. 

 This singular organ is adapted to pump up the nectareous juices 

 from the cups of flowers, and is necessarily of considerable length, in 

 order to enable the insect to reach the recesses wherein the honeyed 



* Head of the flea, as represented by the Solar microscope in Canada balsam ; dedi- 

 cated by permission to the President and Members of the Entomological Society, by 

 W.Lins Aldous. 



