Scolytid proventriculi 



1 D e n d r o c t o n u s p i c e a p e r d a Hopk., end view, x i lo 



2 Tomicus caelatus Eich., internal aspect of flattened segments. 



X I lO 



3 Tomicus c a c o o- r a p h u s Lee, internal aspect of flattened seg- 



ments. X I lO 



4 Pityogenes species, internal aspect of flattened segments, x i lo 



5 Xylocleptes species, internal aspect of flattened segments, x iio 



6 Tomicus calligraphus Germ., internal aspect of flattened seg- 



ments. X I lO 



7 Den droc tonus terebrans Oliv., internal aspect of flattened 



segments, x i lo 



8 Tomicus p i n i Say, internal aspect of flattened segments, x i lo 



796 



