'2 m/Tl'EaFLY COLLECTOIfS 



drical or conical, covered with scales or linirs, and usually 

 consisting of three joints: Muaillury Palpi very minute: 

 yiiidia (tongue) consisting of two pieces forming a tube for 

 suction, which, when not employed, is generally coiled up 

 between the palpi like a watch-spring. Other peculiar cha- 

 racters are to be found in them : viz. patugiu or tippets, which 

 adoni their thorax, and the tcgiilie or base covers, to defend 

 their wings j a honey-bag somewhat analogous to the crop 

 of birds ; and a coUetcrium or varnish secrctor, concerning 

 the use of which physiologists are not agreed. The wings of 

 some male Butterflies are furnished with a singular apparatus 

 for kcepmg them steady, and the under wing fiom passing 

 over the upper in flight. "The great number," says Pr. 

 Shaw, " of species in this genus, makes it absolutely neces- 

 sary to divide them into sections or sets, instituted from the 

 lial)it or general ajjpearance, and in some degree, from the 

 distribution of the coloms on tlie wings. This division of the 

 genus is conducted by Linna-us in a peculiar elegant and 

 instructive manner, being an attempt to combine natural 

 and civil history, by attaching some illu.strious ancient name 

 to an insect of such or such particular cast." The great per- 

 spicuity of his system of Entomology, however, ai'O.se from 

 its author liaving made choice of the most obvious characters 

 which insects afl'ord for the leading distinction of his orders. 

 In the construction of his genera, he has taken his characters 

 from various parts, but paid particular attention to the form, 

 .situation, and structure of the aiilonice or horns ; these parts 

 being conspicuous in a large proportion of insects, and often 

 affording very sati.sfactory and obvioos characters, and so 

 infinitely varied in their appearance, as to constitute, with 

 few exceptions, a pennanent distinction. Other characters 

 more recondite, and perhaps more constant and certain, 

 liuve licen with good effect ap))lied liy later Entomologists to 



