No. 22.] HYMENOPTERA OF CONNECTICUT. 713 



40. Clypeus dull; nearly all of the scopal hairs white; anal fimbriae 



gray and fuscous cockerelli 



Clypeus shining; scopa golden • thaspii 



41. Abdomen and scopa with pale hairs 43 



Abdomen and scopa with dark or black hairs; species with 



some pale pubescence 46 



42. Clypeus without a distinct, shining median impunctate space 43 

 Clypeus with a distinct, shining, median impunctate space; 



enclosure not entirely rugulose hilaris 



43. Enclosure not rugulose, at most granular; clypeus shining 44 

 Enclosure rugulose hilaris 



44. Clypeus not produced 45 



Clypeus produced davisi 



45. Hind tibiae honey-yellow; abdomen subfasciate commoda 



Hind tibiae blackish; enclosure wrinkled, process of labrum 



semicircular in outline cressoni 



46. Face and pleurae with pale pubescence; clypeus with an in- 



distinct median impunctate space vicina 



Face and pleurae with some black pubescence; clypeus with a 

 median impunctate space; species over 12 mm., in length; 

 dorsum of thorax without black pubescence Ccirlini 



47. Process of labrum not emarginate, but truncate anteriorly, 



the truncation wider than the process is long; clypeus 

 shining, not densely punctate; clypeus not maculated . . 48 

 Process of labrum emarginate; clypeus not dull, not densely 

 punctate, but with a median impunctate space 5° 



48. Clypeus without a median impunctate space; length 13 mm. 49 

 Clypeus with a median impunctate space; most of middle 



third of clypeus occupied by an impunctate space; species 

 resembling miserabilis Uavoclypeata pennsylvanicola 



49. Clypeus polished helianthi 



Clypeus not polished braccata 



50. Scopa loose angusi 



Scopa compact; wings blackish 1 asteris 



51. Second dorsal abdominal segment impressed one-half distance 



from base to apex 52 



Second dorsal abdominal segment impressed more than one- 

 half 54 



52. Abdomen black 53 



Abdomen red, not fasciate manae 



Abdomen fasciate forbesi 



Abdomen not fasciate mariae var. concolor 



54. Hind tibiae and tarsi black or blackish .* • • • 55 



Hind tibiae and tarsi stramineous hippotes 



Abdomen not fasciate weedi 



Abdomen fasciate, second dorsal segment impressed less than 

 two-thirds distance from base to apex obscura 



53 



55 



