THE SCOLYTID BEETLES. 







\M'^ 



c gW 





_ _ _ Exocoxal piece 



Epimervm 



Sternellar area 

 Coxa 

 • Sternum 

 Episternum 

 #e(iian line 

 Sternellar piece 



___---- Coa;a 

 Epimerum 



— Int( 



~' 2d suture 



'^<^oxal process 



3d 



cfnite 3 





fe 



Fig. 2.—Dendroctonus valens: Adult, ventral aspect, c, Sternellar area. (OrlKinal.) 



