SMITHSONIAN MISCELLANEOUS COLLECTIONS, VOL. 137 



TREAT, PL- 2 



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Skeletal parts of left half of metathorax and certain associated parts, median view o 

 KOHcear d specimen. Stippling indicates exterior surface dotted lines, structures s 

 through transparent overlying parts. Color overlay shows outline of tympanic air sac with 

 nervous elements and epitheliel sheaths of Bugel, scoloparium, etc., m hlue. 



