NORTH AMERICAN HYMENOPTERA. 187 



Black ; head rounded, vertex and abdomen clothed with golden pu- 

 bescence . auraria. 



Brown-ferruginous; head round; head, thorax and apex of abdomen 



with moderately dense, white pubescence a rot a. 



Fuscous; head round, with whitish pubescence ; abdomen with long. 



silky, golden pubescence aspasia. 



Head, thorax and abdomen with dense fulvous pubescence ; robust. 



mollissima. 

 Black ; densely pubescent, that on the vertex and mesothorax bright 



ochraceous; abdomen shining aiidreniforiiiis. 



Black; head, thorax and abdomen, except first, and basal half of 

 second segment clothed with long ochraceous pubescence. 



ochracea. 

 Head entirely black ; thorax and second abdominal segment above yellow- 

 ish ferruginous, remainder black medea. 



Black ; head not as wide as thorax, clothed above, except basal half 

 of second abdominal segment ; with ochraceous pubescence. 



clio. 

 Head, thorax and abdomen with ochraceous pubescence ; head as wide as 



the thorax holotricha. 



Head, thorax and abdomen with ochraceous pubescence ; "second abdominal 

 segment with two small patches of black pubescence ; apical 



margin black Sicheliana. 



Head and thorax above with ochraceous or ferruginous pubescence. 



Femora and base of tibise with ochraceous pubescence magna. 



Legs entirely black. 



Head broader than thorax, subquadrate aureola. 



Head very large, ferruginous-scarlet ; thorax scarlet ; abdomen black, 

 second segment scarlet ; apical margins of the last three seg- 

 ments fringed with silvery pubescence antiguensis. 



Black ; head large, subquadrate, clothed with dense, coarse, sanguin- 

 eous pubescence above pacifica. 



Abdomen above, except base, ferruginous californica. 



Abdomen above, except base, coccineous coccineoliirta. 



Second and base of third abdominal segments above, ferruginous..creiisa. 



Abdomen (as well as head and thorax) above with short, dense, 



coccineous pubescence ; first ; base and apex of second and 



third segments entirely, black occiden talis. 



Head subquadrate, with black pubescence ; second abdominal segment 

 with a broad, emarginate band of reddish golden pubescence. 



clotbo. 

 Black ; head quadrate, twice as broad as thorax, w T hich is covered 



with dense yellow pubescence marpesia. 



Ferruginous ; head subquadrate, vertex and abdomen with dense, deep, 



golden pubescence; small phsedra. 



Fuscous ; head round, with deep golden pubescence ; abdomen with 



dense, reddish golden pubescence; small zenobia. 



Fuscous ; head round, clothed with whitish pubescence ; second ab- 

 dominal segment with long, silky, golden pubescence, 



aspasia. 



