218 E. T. CRESSON. 



Astata unieolor. 



Astata unieolor, Say, Long's 2d Exped. ii., p. 337. 

 Two % $ specimens. (Belfrage.) 



Astata rufiventris, n. sp. 



J. — Black, shining; head closely punctured, with a silvery white pubes- 

 cence, most dense on face and cheeks; middle of clypeus with some black 

 pubescence; mesothorax shining, with close distinct punctures, sparse on the 

 disk; scutellum smooth, polished, impunctured on the disk; metathorax 

 coarsely reticulated above, sides with long white pubescence, posterior face 

 rugose, with a deep central fovea; pleura densely punctured, with long white 

 pubescence; teguloe black, polished; wings hyaline, apical margin broadly 

 fuliginous; legs black, with pale glittering hairs; abdomen smooth, shining, 

 entirely rufo-sanguineous. Length .50 inch. 



One specimen. (Coll. Gr. W. Belfrage.) 



Astata bicolor. 



Astata bicolor, Say, "West. Quar. Rep. ii., p. 78. 

 One $ specimen. (Belfrage.) 



Astata tenuiuata, n. sp. 



%. — Black; face and cheeks with long silvery-white pubescence; an- 

 tennae long, slender; mesothorax shining, closely punctured, slightly depressed 

 on each side of disk and with a longitudinally impressed line on each side 

 over tegulse; sides of mesothorax anteriorly, pleura and metathorax with 

 rather dense white pubescence, silvery in certain lights; scutellum smooth 

 and polished; metathorax rather finely reticulated above, with a broad shal- 

 low depression on apical middle, posterior face with a large deep shining fovea 

 near upper edge ; tegulse shining black; wings hyaline; legs with thin white 

 pubescence; abdomen bright fulvo-ferruginous, a spot at base of first segment, 

 which is deeply and broadly excavated, most of fjurth segment and the fol- 

 lowing segments entirely, black. Length .42 inch. 



One specimen. (Coll. G. W. Belfrage. ) 



BEMBICTDiE. 



Bembex mtbilipoiiii is, n. sp. 



9 . — Black, clothed with a fine white pubescence, having a beautiful silky 

 lustre in certain lights; sides of face confluent with a spot between antennae, 

 spot before ocelli, posterior orbits, clypeus, labrum, mandibles except tips and 

 scape beneath, bright lemon-yellow; prothorax yellow, with a large irregular 

 black spot on middle, sometimes black with only the sides irregularly yellow; 

 mesothorax black, with a yellow line over tegulae and sometimes two short, 

 slender diseal yellow lines ; scutellum black with a broad posterior yellow 

 band, sometimes much narrowed centrally; postscutellum with a slender 

 transverse yellow line; metathorax generally yellow with a large angular 

 black line and an arcuate black line at basal margin, sometimes black, with 

 lateral angles and two spots or an arcuate band on disk, yellow; pleura black 

 with two or three irregular yellow spots beneath wings; tegulae yellow, 

 pupilled with fuscous; wings hyaline, the basal two-thirds more or less clouded 



