Plate 2. 

 Heads. 



Fig. 5. Cicindela limbalis, lateral aspect, mouth-parts removed. 



6. Cicindela limbalis, ental aspect, tentorium. 



7. Cicindela limbalis, ental aspect. 



8. Cicindela limbalis, dorsal aspect. 



9. Tetracha Carolina, dorsal aspect. 



10. Amblychila cylindrifonnis, ventral aspect, mouth-parts removed. 



11. Amblychila cylindriformis, dorsal aspect. 



12. Omus californicus, dorsal aspect. 



13. Omus californicus, ventral aspect. 



14. Cicindela limbalis, ventral aspect. 



15. Tetracha Carolina, ventral aspect. 



16. Amblychila cylindriformis, ventral aspect. 



75 



