190 THE CANADIAN ENTOMOLOGIST. 



4. Abdominal segments depressed nearly to the base, .trachatidrenoides. 

 Abdominal segments not unusually depressed. 



Abdomen distinctly punctured 5- 



Abdomen not distinctly punctured 8. 



5. Enclosure coarsely rugose, at least at base ; dorsulum with very dis- 



tinct punctures; superior surface of metathorax rather convex. .6. 

 Enclosure not coarsely rugose ; nearly smooth 7. 



6. Abdomen shining ; hair of dorsulum and face white or pale ochreous. 



Abdomen black. 



Pubescence white Kincaidii. 



Pubescence yellow Kincaidii var. 



Abdomen red, at least partly Kincaidii, var. PascueJtsis. 



Abdomen dull ; hair of dorsulum and face bright fulvous. . . . Vernoni. 



7. Punctures of abdomen sharply defined; posterior tibia? dark; enclosure 



rather rugose Cressoni. 



8. .-\bdomen fasciate, with rather dense appressed hair bands 24. 



Abdomen usually without dense appressed hair bands, where they 



occur they are not broad, and the abdomen is tessellate 



punctate 9. 



9. Abdomen with more or less abundant erect pale hair 20. 



Abdomen with no conspicuous erect pale hair 10. 



10. Abdomen and scopa with pale pubescence 11. 



Abdomen and scopa with black or very dark pubescence 17. 



Abdomen with black pubescence ; scopa with pale pubescence. . . 16. 



1 1. Abdomen very distinctly punctate tessellate 12. 



Abdomen not distinctly punctate tessellate 13, 



I 2. Clypeus finely punctured, almost granular puhcruienta. 



13. Length over 1 1 mm i^. 



Length less than 1 1 mm 15. 



14. Dorsulum impunctate setniiiigra. 



15. Abdomen with lateral patches of silvery appressed 



pubescence subaustralis. 



16. Pubescence of dorsulum black : indotata. 



17. Enclosure smoother, only partly rugose. 



Abdomen tessellate punctate 18. 



Abdomen not punctured 19. 



