302 Annals Entomological Society of America [Vol. IV, 



PLATE XXII. 



Fig. 7 shows the curves for the pronotal series. 



Curve (a) represents pronotal characters of annectans offspring shown in Fig. 

 2, Plate II. 



Curve (b) represents pronotal characters of melanopleura offspring in Fig. 2, 

 Plate II. 



The open triangle represents the mother of the series represented by curves 

 (a) and (b), Fig. 2, a and b, Plate II. 



Curve c) represents the annectans series in Fig. 3, Plate II. 



Curve (d) represents the annectans series in Fig. 4, Plate III. 



Curve (e) represents the annectans series in Fig. 4, Plate III, according to 

 general melanism. 



Curve (f) represents the melanopleura series in Fig. 4, Plate III. 



The open triangle represents the mother, Fig. 4, a and b. Plate III. 



Curve (g) represents the annectans series, Fig. 5, Plate III. 

 Curve (h) represents the melanopleura series, Fig. 5, Plate III. 



The solid triangle represents the mother Fig. 5 (a) and (b), Plate III. 



