\ g nUTPERFLY COLLECTOR'S 



It remains toniW for a longer or shorter period ; IVefiuently 

 lianginj? to diflerent substances l.y means of threads attached 

 to its middle or tail. As these pupa: are often tinged with a 

 golden colour, they were called from this circumstance 

 chrysalides by the Greeks, and aurelia: by the Romans, both 

 which tenns are in some measure become anglicized ; and 

 though not strictly applicable to ungilded piipai, are now 

 given to those of all Lepidopterous insects. In some, the 

 bcantiful gold tinge is at one time found ; in others, it is 

 wanting. This brilliant hue is fonned by a transparent brown 

 varnish, laid upon a white ground, which gleaming through 

 gives a golden yellow, so that the whole appears gilded with- 

 out any real gilding. The habitats of the eggs are almost 

 all in the vicinity of the food of the larva:, and in most 

 instances concealed about some part of it. The eggs and 

 clmjsaUih-s of some of the species wiU Uc dormant, it .should 

 .seem, tor several years ; it being an' undoubted fact, that a 

 species of Butterfly shaU be plentiliil one year, and not be 

 seen again till many years after. From the numerous ex- 

 periments of various celebrated naturalists, it clearly appears 

 that cold does not destroy the vital principle in the eggs of 

 insects ; and it has often been noticed, that after a severe 

 winter they were more nnnu-rous in the succeeding .spring 

 and summer. 



