Scolytid proventriculi 



1 Pityogenes species, internal aspect of flattened segments, x no 



2 Tomicus balsam eus Lee, end view, x no 



3 G n a t h o t r i c h u s m a t e r i a r i u s Fitch, internal aspect of flattened 



segments, x i lo 



4 P h 1 o e o s i n u s d e n t a t u s Sa\-, internal aspect of flattened seg- 



ments. X MO 



5 P o 1 \- g r a p h u s r u f i p e n n i s Kirb\-, end view, x 1 1 o 



6 Chramesus hicoriae Lee, internal aspect of flattened seg- 



ments. x i lo 



7 X}lej3oriis eels us Eich., internal aspect of flattened seg- 



ments. X no 



8 X y 1 o*t e r u s 1 i n e a t u s Kirby, internal aspect of flattened seg- 



ments. X no 



9 Dryocoetes autograph us Ratz., internal aspect of flattened 



segments, x no 



lo Tomicus integer Eich., internal aspect of flattened segments. 



X no 



n Dryocoetes sp., internal aspect of flattened segments, .x no 



798 



