178 WILLIAM G. DIETZ, M.D. 



EXPLANATION OF PLATES VII AND VIII. 



Fig. 1. — Pachyphanes discoideus ; la, antenua of same. 

 2. — Pachyphanes cams. 

 " 3. — Antenna of Smicronyx profusus ; 3a, underside of head of the same; 

 3b, underside of head of Desmoris constrictus ; 3c, underside of head 

 of Synertha imbricata. 

 " 4. —Tarsus of Pachyphanes lineolatus ; 4a, tareus of Smicronyx obtectiis ; 4b, 

 tarsus of Promecotarsus ftimatus. 

 5. — Posterior tibia of Desmoris scapalis ; ba, same of Pachyphanes amosnus. 

 6. — Pachyphanes lineolatus. 



7. — Pachyphanes triangularis ; 7a, tarsus and claws of the same ; 76, Pachy- 

 phanes amcenus. 

 8. — Smicronyx squalidus. 



9. — Anterior tibiae of Smicronyx profusus ; 9a, claws of the same seen froui 

 above ; 9b, lateral view of same ; 9c, claws of Smicronyx vestitus. 

 10. — Beak of Smicronyx impressirostris. 

 11. — Prosternum of Smicronyx congestus. 

 12.— Smicronyx perplexus. 

 13. — Smicronyx cognntus. 

 14. — Smicronyx spretus. 

 lo. — Smicronyx scalator. 

 1 6. — Smicronyx quadrifer. 

 17. — Smicronyx instahilis. 

 18. — Smicronyx posticus. 

 19. — Beak of Smicronyx lepidus. 

 20. — External view of posterior tibiae of Smicronyx vestitus ; 20a, same of 



Smicronyx maculatus. 

 21. — Smicronyx ornatipennis. 

 22. — Smicronyx columbianus. 



23. — Beak of Smicronyx corniculatus % ; 23a, beak of Smicronyx griseus. 

 24. — Antenna of Smicronyx obtectus. 

 25. — Synertha hornii. 



