284 



KELLOGG AND BELL 



Ac 



_ 



FIG. 54. Diagram showing var. in pattern in the abdominal segments of 

 the yellow jacket, Vespa sp. 



Class D : 41 individuals with both spots of segment 2 attached 

 by a very narrow stem (mere line) (fig. 54, D) ; of which all 

 have both spots of segment 5 attached. Subclass Da: n 

 individuals have one or both spots of segment 5 attached by a 

 narrow stem (fig. 54, Da). Subclass Db : 22 individuals have 

 both spots attached by a broad stem or bar (fig. 54, Db). 



Class E : 201 individuals with both spots of segment 2 at- 

 tached by abroad stem, but the ends, /. ., spots, are buttoned, 

 i. ., are slightly broader than the stem (fig. 54, E). All these 

 individuals have both spots of segment 5 attached. 



