PLATE 2 



EXPLANATION OF FIGURES 



10 The point of union between the epithelium of the foie- and mid-guts. ep.. 

 epithelium of the mid-gut; g.e., glandular appearing epithelium of the fore-gut. 



11 Fore- and mid-guts of the pupa just after pupation. In this case the intima 

 of the gizzard remained lodged in the anterior end of the oesophagus. 



12 Cross-section of the proventriculus of the fore-gut showing the four promi- 

 nent chitinous ridges which project into the mid-gut. 



13 Cross-section of the fore-gut of a pupa about twenty-four hours old I. in., 

 longitudinal muscles; cm., circular muscles; /6., remnants of the breaking down 

 muscle fibrillae ; .r, degenerating nuclei. Within the lumen lies the loosened intima. 



14 A more highh' magnified section of the epithelium of figure 13 to show the 

 degenerating nuclei (x). 



15 A lateral view of the muscles of the pharynx, showing the dorsal muscles in 

 place. 



16 Ventral view of the pharynx showing the lateral muscles. 



618 



