398 bulletin: museum of comparative zoology. 



9. Body opaque, distinctly sliagreened. .rufiharhis var. clara Forel. 

 Body subopaque, lustrous, finely shagreened. 



rufiharhis var. caucasica Ruzsky. 



10. Erect hairs yellow : pubescence of gaster without silky luster. 



rufiharhis Fabricius. 

 Erect hairs whitish, pubescence on gaster longer 11 



1 1 . Gaster with a bluish tinge rufiharhis var. glauca Ruzsky. 



Gaster gray, red of body somewhat paler. 



rufiharhis var. suhpilosa Ruzsky. 



12. Length 3-6.5 mm. Epinotum angular in profile, body slender. 



fusca ■picea Nylander and its var. gagatoides Ruzsky. 

 Length 5-7.5 mm. Epinotum rounded in profile, body stout. 



gagates Latreille and its var. fuscogagatcs Forel. 



13. Body slender, thorax long, with very long, shallow, saddle- 



shaped mesoepinotal constriction suhrufa Roger. 



Body stouter, thorax of the usual shape 14 



14. Body dark brown or blackish. 



cinerea Mayrand its vars. fuscocmerea Forel 



and armeniaca Ruzsky. 

 Body light reddish brown cinerea var. imitans Ruzsky. 



15. Gula without erect hairs 16 



Gula with erect hairs 26 



16. Gaster opaque or subopaque, densely pubescent 17 



Gaster more shining, very sparsely pubescent 24 



17. Thorax black or very dark brown 18 



Thorax largely red 21 



18. Pubescence on gaster short, not silky fusca Linne. 



Pubescence on gaster longer, denser and silky 19 



19. Body black, pubescence not silvery, .fusca var. subsericca Say. 

 Body dark brown 20 



20. Pubescence on body not silvery, sutures of thorax reddish or 



yellowish fusca var. marcida, var. no v. 



Pubescence on body somewhat longer, denser, and silvery. 



• fusca var. argentea Wheeler. 



21. Gaster black or blackish brown; epinotum angular in profile ... 23 

 Gaster reddish brown, paler, epinotum rounded in profile .... 22 



22. Gaster more or less infuscated above; length 3-6 mm. 



fusca var. neoclara Emery. 

 Gaster not infuscated above, length 3-3.5 mm. 



fusca var. hlanda, var. no v. 



23. Length 4-7.5 mm.; gaster opaque, with long, dense pubescence. 



rufiharhis var. occidua Wheeler. 



