326 THE CANADIAN ENTOMOLOGIST. 



13. Abdomen entirely black rubripes. Cress. 



Abdomen transversely banded above with rufous or yellow. . . 14. 



14. All the femora rufous rufocitictus, Nort. 



The femora in part black tibialis. Cress. 



15. Antennae pale at base riifescens, Nort. 



Antennae entirely black 16. 



16. Tnorax reddish-yellow unicus, Nort. 



Thorax black 17. 



17. Abdomen wholly rufous iaciius, Say. 



Abdomen in part black 18. 



18. Abdominal segments two to four wholly pale 19. 



Abdominal segments two to four in part black 24. 



19. Coxae wholly pale 20. 



Coxae entirely or in part black 21. 



20. Scutellum black pallicoxus, Prov. 



Scutellum white. proximus, Prov. 



21. Basal abdominal segment wholly black 22. 



Basal abdominal segment not wholly black 23. 



22. Femora black at base anmilosus, Nort. 



Femora rufous lucitiosu^, Prov. 



23. Coxae wholly black impressatus, Prov. 



Coxte waxen-yellow at apex iongulus, Nort. 



24. Abdominal segments yellow at base and black at apex 



.multicinctus, Nort. 



Abdominal segments black at base and yellow at apex, or with 

 only the two basal segments black 25. 



25. Coxae wholly rufous soricniatus, Prov. 



Coxae in part black 26. 



26. Abdomen with the two basal segments black 27. 



Abdomen with the two basal segments not wholly black 28. 



27. Legs waxen-yellow Iongulus, Nort. 



Femora in part black at base ; female with a whorl of hairs at 



apex pacificus, MacG. 



28. Abdominal segments finely margined with white politus, Prov. 



Abdominal segments with the apical half testaceous or reddish- 

 yellow 29. 



29. Coxae wholly black atmulosus, Nort. 



Coxae pale at apex distans, Nort. 



