452 Mr. T. D. A. Cockerell on 



cells and belong to Exomalopsis ; my type of Anthophorula, 

 having but two submarginals, was evidently an aberration, so 

 the latter generic name must fall. It should be added to the 

 original description of the female that the scopa on the poste- 

 rior tarsi is sooty ; the pubescence on the mesothorax and 

 scutellum is fuscous, contrasting with the white pubescence of 

 the hind edge of the prothorax, the pleura, and the base of 

 the metathorax. The margins of the mesothorax have a 

 little very short white hair, conspicuous only in certain lights. 

 The fiagellum is a very tine orange-fulvous. 



The male is about 5^ millim. long, with the clypeus, 

 labium, and mandibles except tips yellow. The bright 

 orange fiagellum has a black or blackish spot on each joint 

 beneath, that on the last being intensely black and occupying 

 the apical half of the joint. The scape lias an orange streak. 



The species is, I think, allied to E. pulchella, Cress. 



Exomalopsis solidaginis, sp. n. 



S • — Length about 5 millim. 



Black, with rather abundant entirely pale pubescence. Head 

 broader than long, vertex quite broad, shining ; face densely 

 covered with plumose shining white hair; clypeus and labrum 

 Hack • mandibles black, dark rufous at the middle ; scape 

 black, fiagellum yellowish brown, black above ; pubescence of 

 pleura pure white, of thoracic dorsum dirty white ; mesothorax 

 smooth and shining, punctured only at the sides; base of 

 metathorax nude, smooth and shining ; tegular pale testa- 

 ceous, hairy all over ; wings perfectly clear, nervures and 

 stigma very dark brown ; second submarginal cell extremely 

 small and narrow, twice as high as long, narrowest above ; 

 transverso-medial ncrvure joining first discoidal cell almost at 

 its extreme base ; legs black, with abundant white hair ; the 

 tarsi, especially the small joints, ferruginous ; hair on inner 

 side of basal joint of hind tarsi fulvous ; abdomen short, as 

 usual in the genus, covered with dull white hair, except the 

 disk of the first segment, which is exposed and shining, 

 though not free from hair. Instead of a transverse ridge, 

 with a strongly punctured area behind it, as in E.compactulus £ , 

 the first segment has a rounded contour and no conspicuous 

 punctuation. 



Hob. Las duces, N. M., in the town, on flowers of Soli- 

 dago canadensis, subsp. arizonica, Gray, on the bank of the 

 Acequia, Aug. 27, 1898 (C. H. T. Townsend). 



