PLATE IV. 

 WASPS AND BEES 



FIG. 



1. Crabro singuiaris 



2. Agapostemon texanus 



3. Andrena melliventris 



4. Collates thoracica 



5. Epeolus lectus 



6. Crabro interruptus 



7. Andrena texana 



8. Epeolus concavus 



9. Solenius scaber 



10. Coelioxys dubitata 



1 1. Nomada modesta . 



12. Melissodes rustica 



13. Epeolus donatus 



14. Xestocrabro 6-maculatus 



15. Megachile frigida 



1 6. Nomada maculata 



17. Melissodes suffusa 



1 8. Epeolus lunatus 



19. Pseudocrabro chrysarginus 



FIG. 



20. Megachile xylocopoides 



21. Nomada belfragei 



22. Melissodes obliqua 



23. Sphecodes dichroa 



24. Anthidium interruptum 



25. Megachile mendica 



26. Nomada grandis 



27. Melissodes perplexa 



28. Larra americana 



29. Anthidium palliventris 



30. Megachile bucephala 



31. Microbembex monodonta 



32. Melissodes menuacha 



33. Anthidium zebratum 



34. Monia apacha 



35. Megachile pruina 



36. Bembex obsoleta 



37. Melissodes confusa 



38. Monia heteropoda 



