PLATE XIX. 



Fig. 1. Saw of Nematus longiserra. 

 Fig. 2. Saw of Nematus humeralis. 

 Fig. 3. Saw of Nematus imperfectus. 

 Fig. 4. Saw of Nematus canaliculatus. 

 Fig. 5. Saw of Nematus placidus. 

 Fig. 6.' Saw of Nematus caprece. 



The figures of the saws are magnified X 200, 



