THE CANADIAN ENTOMOLOGIST. 299 



2. Face and legs entirely dark 3. 



Face and legs not entirely dark 5. 



3. Smaller, about 6 mm. long diatretus^ Vach. 



Larger, about S mm. long 4. 



4. First abdominal segment closely punctured, rugc\3 of metathorax 



irregular sisynibrii, Ckll. 



First segment sparsely punctured, rug?e of metathorax regular 



parallel Oly?npice, Ckll. 



5. Species with hair bands on the apical margins of abdominal 



segments 6. 



Species without such hair bands 8. 



6. Flagellum bright ferruginous beneath ligaius, Say. 



Flagellum darker beneath 7. 



7. Punctures of abdomen close, abdomen shiny Lerouxii, Lep. 



Punctures of abdomen spafse, abdomen not shiny . . . farinosus, Sm. 



8. Tibiie entirely dark 9. 



Tibiae not entirely dark 10. 



9. First abdominal segment almost impunctate Titust, Cwfd. 



First abdominal segment closely punctured trizonatus, Cress. 



10. Base of metathorax with a triangular enclosure Kincaidii, Ckll. 



Base of metathorax without such enclosure 11. 



1 1 . Base of metathorax with fine stripe • 12. 



Base of metathorax with coarse rugae 13. 



12. About 6y^ mm., anterior tibias yellow, with a black 



stripe Cordleyi, n. sp. 



About 8 mm.., anterior tibire black, with a yellow stripe. Cooleyi, n. s|). 

 About 93^ mm arctous, Vach. 



13. Punctures of mesothorax close, enclosure of metathorax 



distinct pacificus, Ckll. 



Punctures of mesothorax not close, enclosure of metathorax not 

 distinct . truncaius, Robt. 



14. Abdomen with bands on the apical margins of 



segments Provancheri, D. T. 



No bands on the apical margins of segments 15. 



15. Abdomen green, with more or less testaceous zephyrtis, Sm. 



Abdomen not green 16. 



