28 



THE PUPA. 



CHAPTEE ly. 



THE PUPA. 



The forms that the larvae assume in preparing them- 

 selves for the pupa state have just been described. It 

 merely remains for us now to arrange the pupne according 

 to their number and position of parts, and to consider 

 their general structure. 



The following arrangement might serve for their gen- 

 eral consideration : 



r 1. Like the perfect insect except in the 

 proportion and number of parts. 



With oral organs re- 

 sembling those of the 

 perfect insect. 

 With oral organs dif- 

 fering from those of 

 I the perfect insect. 

 '1. Incomplete jDupa — body only partially in- 

 cased, legs, tongue, etc., free. 

 2. Obtected — body completely encased in a 



shell or skin, but without a cocoon. 

 3 Coarctate — body incased, both in a shell or 

 skin, and in a cocoon of silk, hair, &c. 



We might study the general and structural features of 

 larvae under the following heads of substance, figure and 

 2?arts, color, aye, sex, ^notions and extrication of the per- 

 fect insect. 



1. Pupa capable of 

 eating and \ ^ 

 •walking. 



W^ith rudiments of 

 the organs of flisrht. 



Incapable o f 

 eating and 

 walking. 



PUPA Olf SPTITNX MOTH. 



