450 



TEXT-BOOK OF ENTOMOLOGY 



composed of large granulated nuclei ; and within are the more trans- 

 parent endotracheal cells ; at t' are fragments of the moulted tsenidia. 

 The new taenidia are in process of development at t ; at base they 



\ \ 



fc'^'ie w^a 



? W* & 



:&? *C^K' 



Fie. 414. Tsenidia and internal Lairs of Zaitha. After Stokes. 



