244 



Fr.ASHLic.HTs ON X.vrrKK 



Ixill dress. As llic piipii j^rows older, the skin 

 or cast* stands otT of itself from the animal witiiin, 

 by a sort of stranj^e internal shrinkage, and a 

 layer of air is thus formed between case and 



NO. 7.— rME IKMAI.K MOSi.irilO, ABANDONING HER VVVX CASE. 



occupant. Tiiis causes the whole apparatus to 

 tloat t(j the surface, and enables the winded tly 

 to make an effective exit. The new mosquito, 

 lookint^ still very hump -backed, and distinctly 

 crouching, breaks through the top of the pupa- 



