342 INEZ WHIFFLE WILDER. 



PLATE VI. 



FIG. 31. Vertical section through the skin of an individual which has just com- 

 pleted its metamorphosis, but in which the first moult has not yet occurred. Note 

 the presence of a deeper layer of flattened cells which will become the next moult 

 layer. 



FIG. 32. Vertical section through the skin of a very small adult (length 29 mm.) 

 collected in June shortly after metamorphosis and after the first moult has been 

 cast. 



FIG. 33. Vertical section through the skin of a large adult, showing the large 

 size of the acinous glands, the great thickness of the loose corium, and the relative 

 thinness of the epidermic layer (cf. larval condition). 



