EXPLANATION OF PLATE VI. 



Tomocerus arcticus Schott. 



Fig. 



1. Dentes, showing spines 



2. Mandible 



3. Tips of the two mandibles 



4. Maxilla 

 5- Palp 



6. Labrum 



7. Miicrones 



8. Mutilated antenna 



9. Tip of normal antenna 



Tomocerus niger Bourl. 



10. Dentes, showing spines 



11. Left eye patch 



12. Mucrones 



