NORTH AMERICAN HYMENOPTERA. 237 



row line, third aud fourth segments cUrthed with pale, the fifth with dark golden 

 jnihescence, apex black ; under side closely punctured, thinly clothed with silvery 

 hairs, lateral sutures fringed with silver, ventral segments same as above. 

 Length 6.5-12 mm. 



Hab. — Mexico. Prof. F. Suniichrast. 



Sphieroplithalma balopilus Blake. 



Female. — Head quadrate, wider than the thorax, posterior angles subacute, 

 clothed with dense golden pubescence ; antennie rufo-piceous ; eyes round, promi- 

 nent ; thorax subovate, closely reticulate, narrowed posteriorly, clothed with 

 golden pubescence, mesothorax with a subcordate black patch on the disc, meta- 

 thorax abruptly truncate: legs rufous, thinly clothed with fine, glittering hairs, 

 calcaria pale; abdomen ovate, second segment thinly clothed with glittering 

 golden pile, on the disc is a round, brown-black spot connecting with the apical 

 margin, which is black, remaining segments clothed with golden pubescence; 

 ventral segments fringed with pale hairs. Length 8-10 mm. 



Hab. —Mexico. Prof. F. Suniichrast. 



Sphierophthalnia altainira Blake. 



Female.— Head rounded, not as wide as thorax, clothed with bright golden pu- 

 bescence, interspersed with erect hairs; antennae and mandibles black; eyes 

 round, prominent ; thorax short, slightly dilated at middle, closely reticulated, 

 anterior angles acute, mesothorax black, metathorax abruptly truncate, clothed 

 with bright golden pubescence, a round black spot on the disc, on each side of 

 which is a small tubercle ; legs black, thinly clothed with glittering hairs ; ab- 

 domen ovate, narrowed to apex, basal segment black, closely punctured, apical 

 margin clothed with bright, i)ale golden pubescence; second segment thinly 

 clothed with glittering golden pubescence, bearing on disc a large subtriangular 

 black patch, below which the tegument has a pale rufous tinge; apical margin 

 fringed with silvery pubescence, third segment black, apical segments adorned 

 with ])ale golden pubescence; lateral sutures fringed with silvery pile ; under 

 side dark ferruginous. Length 8.5-9 mm. 



Hab. — Mexico. Prof. F. Suniichrast. 



Spliterophthalnia xalisco Blake. 



Female. — Head round, not as wide as thorax, clothed with bright golden pubes- 

 cence ; scape of antennse and mandibles rufous, tips of the latter black ; eyes 

 round, large, prominent ; thorax short, subovate, closely reticulate, 

 mesothorax black, metathorax clothed with bright golden pubescence, 

 roundly truncate behind ; legs rufo-piceous, clothed with scattered 

 glittering hairs, intermediate and posterior tibiae armed with spines, 

 calcaria white; abdomen ovate, basal segment clothed with silvery 

 pubescence on its apical margin, second segment black, having a broad 

 band of fine, golden pubescence, slightly contracted at the middle, 

 third with a small central patch of pale pubescence, following segments 

 similarly clothed ; under side dark chestnut brown, irregularly punc- 

 Length 5.5-6.5 mm. 



-Mexico. Prof. F. Sumichrast. 



