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 42 



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 carlini 



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 50 



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 Havoclypeata 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 mariae 



53. Abdomen fasciate forbesi 



Abdomen not fasciate mariae var. concolor 



54. Hind tibiae and tarsi black or blackish 55 



Hind tibiae and tarsi stramineous hippotes 



55. Abdomen not fasciate weedi 



Abdomen fasciate, second dorsal segment impressed less than 



two-thirds distance from base to apex obscura 



