J2;j GENERA. 



satisfactorily demonstrate to the learned entomo* 

 logist ; especially if he will take the trouble to 

 consider attentively the set of plates belonging to 

 each genus : and though the principal difference 

 lies in the tongue, he will experience but little 

 difficulty in determining to which any particular 

 individual ought to be referred; for the long, 

 inflected, cylindrical, and often subinvolute tongue 

 of a genuine j4pis, is usually very easily examined 

 without the assistance of a lens ; all that is neces- 

 sary in most species is with a pin, when it is con- 

 cealed by them, to lift up the valvulae. In some 

 species oiMelittce, which seem intermediates of the 

 two genera, the apex of these is nearly as long as 

 the base (/) ; and as the former are inflected, these 

 might be mistaken for Jlpes ; but the tongue will 

 not be found inflected under the valvulae. Indeed, 

 a little practice will enable any one to distinguish 

 the species of each genus, without even this trou- 

 ble ; especially when he becomes conversant with 

 the characters of the several families into which it 

 may be subdivided. I should recommend it strongly 

 to every collector to take the pains to unfold the 

 proboscis of such individuals as he may collect, this 

 is easily done with a pin before the insect stiffens, 

 and it may be made to continue unfolded by being 

 set out, and its various parts separated, by pins or 

 braces of card. 



But though it is so easy to distinguish these two 

 genera from each other, it m^y not be equally easy 

 (i)Tab.3. **. c. fig. p. a. 



to 



