HENRY J. FRANKLIN. 77 



4. Dorsum of thorax usually bearing a fairly well defined patch of 



white pile on the disc ; the wings usually comparatively light. 



fuiiebris. 

 Dorsum of thorax with no definite white patch, most of the pile 

 being dark cinereous; the wings usually rather dark. 



vohicelloides. 



5. With more or less yellow pile 15. 



With no yellow pile 6. 



6. Dorsum of thorax ferruginous-red or ferruginous-orange 7. 



Dorsum of thorax black or cinereous 9. 



7. Dorsum of abdomen with the first five segments clothed with en- 



tirely ferruginous or orange pile dahlbomii. 



Dorsum of abdomen not so clothed 8. 



8. Pleura black eniiliae. 



Pleura ferruginous rnbicundus. 



9. Dorsum of thorax and pleura concolorous 10. 



Pleura colored differently from dorsum of thorax. ..handlirschi. 



10. First three dorsal abdominal segments black 11. 



Not all of the first three segments black 12. 



11. Malar space slightly longer than its width at apex. 



doliclioceplialiis. 

 Malar space distinctly shorter than its width at apex. 



brachycephalus. 



12. Dorsum of abdomen clothed entirely with ferruginous pile...ba}ri. 

 Dorsum of abdomen not clothed entirely with ferruginous pile.. 13. 



13. First dorsal abdominal segment black 14. 



First dorsal abdominal segment ferruginous butteli. 



14. Malar space more than one-third as long as the eye caroliiins. 



Malar space less than one-third as long as the eye cocciueiis. 



15. With more or less reddish or ferruginous pile 16. 



With neither reddish nor ferruginous pile 25. 



16. Dorsum of thorax unicolorous 17. 



Dorsum of thorax bicolored 19. 



17. Dorsum of thorax yellow emilite. 



Dorsum of thorax dark 18. 



18. Epipygium entirely black pulcher. 



Epipygium mostly ferruginous moiiteziima^ and weisi. 



19. Second dorsal abdominal segment clothed with entirely red-ferru- 



ginous pile laticinctus. 



Second segment not so clothed 20. 



20. First three dorsal abdominal segments entirely clothed with yellow 



pile 21. 



Not all of the first three dorsal segments yellow 22. 



21. Fourth, fifth and sixth dorsal abdominal segments ferruginous or 



reddish <H>ifox. 



TRANS. AM. ENT. SOC, XXXIX. 



