NORTH AMERICAN HYMENOPTERA. 215 



Sphterophtlialma aureola Cresson. 



Female. — Black, coarsely punctured ; head large, quadrate, wider than the 

 thorax, clothed above the antennas with a dense, deep golden yellow pubescence ; 

 on the rest of the head the pubescence is black ; eyes small, round, entire, convex 

 and polished ; mandibles black, also polished ; antenna? piceous brown, the scape 

 with black pubescence, the flagelluni tinged with rufous, sericeous ; thorax very 

 short and broad, somewhat strangulated behind the middle, abrupt on the sides 

 and behind, the upper surface densely clothed with a deep golden yellow pubes- 

 cence ; metathorax abruptly truncate behind, and, as well as the sides of the 

 thorax, sparsely clothed with black pubescence ; legs black, with long, scattered, 

 black pubescence; abdomen ovate, densely clothed, except base, with long, ap- 

 pressed, deep golden yellow pubescence ; the node, the base of the large basal 

 segment above, and the whole of this segment beneath, except its apical margin, 

 clothed with black pubescence: above, the black on the large basal segment 

 slightly indents the yellow on the basal middle ; the node is small, circular at 

 tip and flattened above at base ; all the ventral segments have an apical fringe 

 of dense golden yellow pubescence. Length 14 mm. (Cresson.) 



Hab. — California. 



Allied to californica Radoszkowski, but differs by the large quad- 

 rate head and the shorter thorax. 



Sphrerophthalma mollissima n. sp. 



Male. — Kobust; black, head large, rounded, densely clothed with coarse, erect, 

 fulvous pubescence ; antennae black ; eyes large, round, prominent ; cheeks closely 

 punctured, clothed with black pubescence ; thorax short, ovate, pro- and meso- 

 thorax clothed on the disc with dense fulvous pubescence, metathorax roundly 

 truncate, coarsely reticulate ; wings fuscous, paler about the middle, marginal 

 cell short, truncate at tip, first submarginal cell nearly as large as the marginal 

 cell, pointed towards base, second submarginal subovate, its transverso-cubital 

 nervures arcuate, receiving the first recurrent nervure before the middle, third 

 submarginal subpentagonal, its outer nervure sinuate and confluent with the 

 second recurrent ; legs black, thinly clothed with black hairs ; abdomen ovate, 

 basal segment campanulate, closely punctured, shining, its apical half and re- 

 maining segments clothed with dense fulvous pubescence ; ventral surface of 

 second segment finely and densely punctured, apical margins fringed with glit- 

 tering fulvous pubescence. Length 15 mm. ; expanse of wings 25 mm. 



Female. —Similar to the male, with the exception of the metathorax, which is 

 very abruptly truncate, the punctures of the second abdominal segment coarser, 

 and the pubescence longer. Length 14 mm. 



Hab. — Colorado. 



This species is closely allied to S. aureola Cresson, but may be 

 separated by the more robust form and the pubescence being- 

 fulvous. 



Spluerophthalma canina Smith. 



Female. — Kufo-testaceous, palest beneath ; the vertex and front densely clothed 

 with long, pale ochraceous pubescence ; head round, eyes large and prominent ; 

 thorax : the anterior half of the mesothorax clothed with black pubescence, the 



