CHAPTER III. 



RESPIRATION OF THE PUPA. 



HAVING glanced at these particulars in the 

 history of the pupa, we come to the important 

 question, Does the pupa, in this torpid con- 

 dition, still breathe, as the larva did, or not? 

 On a careful examination we might detect, with 

 the help of a magnifying glass, the same breathing 

 holes or spiracles, spoken of on page 161, as apper- 

 taining to the larva; and were we sufficiently 

 skilful to dissect the pupa, we should find much 

 the same arrangement of air-tubes within the 

 body. In the absence of all other means of ascer- 

 taining the fact, we should be warranted in con- 

 cluding from the presence of these organs alone, 

 that the pupa has the faculty of breathing, no less 

 than the larva. M. Reaumur has given a beautiful 

 description of the breathing-holes, or spiracles, of 

 the pupa, and has represented them in an engraving, 



