ART. 3 



WASPS OF SUBFAMILY BEACHYCISTIINAE MALLOCH 



AEQUALIS GROUP 



1. idiotes Cockerell. 



2. noctivaga Bradley. 



3. aequaiis Fox. 



4. normalis Malloch. 



CASTANEA GROUP 



5. crassa Bradley. 



6. stygia Bradley. 



7. castanea Cresson. 



8. thermarum Bradley. 



CARINATA GROUP 



9. rugosa Malloch. 



10. carinata Fox. 



11. subcarinata Malloch. 



BREVIS GROUP 



12. texana Malloch. 



13. brevis Fox. 



14. eremi Bradley. 



GAUDII GROUP 



15. gaudii Cockerell. 



16. parrn Malloch. 



AMPLA GROUP 



17. ampin (Blake). 



18. protractor Bradley. 



LIST OF SPECIES 



INAEQUALIS GROUP 



19. nigrifrons Malloch. 



20. inaequalis Fox. 



21. curvata Malloch. 



22. utahensis Malloch. 



23. alcanor Blake. 



24. dentata Bradley. 



MICROMMATA GROUP 



25. micrommata Bradley. 



26. intermedia Malloch. 



27. 7nelanocephala Malloch. 



28. verticalin Malloch. 



29. dakotensis Malloch. 



NITIDA GROUP 



30. nevadensis Fox. 



31. nitida (Cresson). 



32. ivashingtona Malloch. 



33. glabrella Cresson. 



ATRATA GROUP 



34. atrata (Blake). 



35. imitans Malloch. 



36. lacustris Malloch. 



37. indiscreta Fox. 



38. semiatra Malloch. 



39. triangtdaris Cresson. 



AEQUALIS group 



Characters. — Second abdominal sternito with a conspicuous longi- 

 tudinal carina on basal portion; distance from apex of stigma to apex 

 of marginal cell not less than two-thirds as great as length of stigma; 

 propodeum with a distinct transverse carina between horizontal and 

 declivous sections; hind coxae without a longitudinal carina on their 

 posteroventral, or inner opposed surfaces. Male hypopygium as in 

 figure. 



KEY TO SPECIES 



1. Basal segment of abdomen when seen from above at least 2.5 as long as its 



apical width, when seen from the side about three times as long as its 



greatest height; sternal carina short and not very high idiotes Cockerell. 



Basal segment of abdomen when seen from above distinctly less than twice as 

 long as its apical width, when seen from the side not over twice as long as 

 its greatest height 2. 



2. Carina of gular orifice produced into a sharp elevation at its anterior extremity 



which is plainly visible from the side when the head is held in a vertical 



position noctivaga Bradley, 



Carina of gular orifice not exceptionally elevated at its anterior extremity 

 which is not visible when the head is held in a vertical position 3. 



3. Basal abdominal segment about twice as long as its apical width when seen 



from above; apical edge of clypeus very little elevated aequaiis Fox. 



Basal abdominal segment distinctly less than twice as long as its apical 

 width when seen from above; apical edge of clypeus quite noticeably ele- 

 vated normalis, new species- 



