NORTH AMERICAN HYMENOPTERA. 235 



Closely resembles S. Oressoni, but is readily distinguished by the 

 bands on the thorax and by the less robust form. 



Splirerophthalma toluea Blake. 



Female. — Black ; head rounded, clothed with dense, pale, ochraceous pubes- 

 cence ; antenna? black ; eyes round, prominent ; thorax ovate, narrowed poste- 

 riorly, clothed with coarse, black, meso- and metathorax with coarse 

 £ Q ochraceous pubescence, sides of the latter black, abruptly truncate ; 

 4fe legs black, clothed with scattered glittering hairs, intermediate and 

 \^/ posterior tibia?, armed with spines; abdomen ovate, basal segment 

 clothed with pale hairs ; second segment closely punctured, having 

 two small ovate spots at the base and a broad, internally emarginate 

 band of coarse ochraceous pubescence, pointed towards the apex ; apical 

 segments clothed with similar pubescence ; under side of entire insect 

 clothed with pale hairs. Length 11 mm. 

 Hab. — Mexico. Prof. F. Sumichrast. 

 Sphrerophthaliiia luteola n. sp. 



Female.— Head black, rounded, not quite as wide as the thorax, clothed on 

 vertex with pale golden pubescence, front and mouth densely, with pale luteous 

 pubescence ; eyes large, round and prominent ; antennae fuscous, cheeks finely 

 and confluently punctured ; thorax ovate, black, closely punctured, clothed above 

 with pale golden pubescence, metathorax obliquely truncate, its posterior surface 

 clothed with white pubescence ; legs nigro-castaneous, clothed with long, glitter- 

 ing white hairs, femora very finely and remotely punctured, intermediate and 

 posterior tibia? armed with fuscous spines ; abdomen black, ovate, basal segment 

 campanulate, short and sessile with the second, its apical margin fringed with 

 dense, pale, luteous pubescence ; second segment coarsely reticulate and clothed 

 with black pubescence, its apical margin and remaining segments densely clothed 

 with pale golden pubescence ; ventral surface finely punctured, the apical mar- 

 gins fringed with white pubescence ; entire insect sparsely clothed with long 

 glittering white hairs. Length 10-12 mm. 

 Hab. — Utah, Kansas. 



This species is allied to S. toluea Blake, but differs from that by 

 the absence of the pubescent spots. It may possibly prove to be the 

 female of S. flavida. 

 Sphserophthalma ariaclne Blake. 



Female. — Head rounded, not quite as wide as the thorax ; black, rugose, with a 



few scattered erect hairs ; antenna? black ; eyes round, polished ; thorax short, 



suddenly narrowed behind, clothed with bright golden pubescence ; mesothorax 



with a triangular black, granulate patch ; mesothorax abruptly trun- 



<5~3 cate ' sides deeply compressed, coarsely punctured, clothed with sil- 



^Ps very pubescence; legs black, clothed with scattered silvery hairs, in- 



\_j termediate and posterior tibia? armed exteriorly with a row of spines ; 



abdomen ovate, basal segment black, its apical margin clothed with 



silvery pubescence ; second segment coarsely punctured, clotbed with 



bright golden pubescence, having on the disc a large ovate black patch 



extending to the basal margin, on each side of which is a small one of 



the same color witb thin black pubescence ; apical margin black ; third 



and fourth segments clothed with dense black pubescence, fifth bright golden, 



