142 [January 



Bembex armata, n. sp. 



Black; face golden ; clypeus, labrum, line over collar, tubercles, two short 

 lines on mesothorax, line over tegulse, large spot on pleura, sides of scutellum, 

 postscutellum, a curved line or two spots on metathorax, most of legs, and a 

 band on each abdominal segment, all yellowish; wings hyaline; second ven- 

 tral segment of £ with a long, acute, curved tooth. 



Female. — Black, clothed with a short, fine hoary pile; the face, cly- 

 peus and cheeks bright silvery, the former somewhat tinged with golden 

 towards the vertex ; clypeus produced, dull ferruginous; labrum and 

 mandibles yellowish, the former dull ferruginous at base and the latter 

 black at tips ; antennae black, the scape except its base behind, yellow. 

 Thorax dull black, densely and finely punctured, clothed above with a 

 very short golden pubescence ; a line over the collar extending on each 

 side and covering the tubercles, two short lines on the mesothorax, a 

 line over the tegulae, a large mark on the pleura, tegulas, sides of the 

 scutellum, postscutellum, a transverse arcuated line on the metathorax, 

 as well as a spot on each side behind, yellow ; the pleura and metatho- 

 rax clothed with a fine bright silvery-sericeous pubescence, very dense 

 on the posterior sides of the latter. Wings hyaline, nervures fuscous. 

 Legs yellow ; base of the coxae, trochanters, basal two-thirds of the 

 femora, and the tibiae within, black; tarsi tinged with ferruginous, the 

 anterior pair dilated and fringed with long dusky setae. Abdomen 

 black, shining, the apical margins of all the segments broadly pale 

 greenish-yellow, the anterior margins undulate and indented on the 

 middle, that on the apical segment divided by a central black line; 

 base of first segment silvery-sericeous; beneath, the apical margins of 

 the segments are narrowly yellowish, with a large lateral pale yellowish 

 spot. Length 5-} lines; expanse of wings 9 lines. 



Male. — Rather stouter than the female ; the face bright golden ; the 

 clypeus and labrum bright yellow ; the mandibles piceous, with an ex- 

 terior basal streak of yellowish ; the antennae entirely black, except the 

 tips of the scape beneath, which are dull-yellowish; two small linear 

 spots on each side of the pleura instead of a large mark ; the line on 

 the postscutellum interrupted in the middle, forming two oblique marks 

 which are accuminate and pointed towards the disk, the yellow spots 

 on each side behind are obsolete ; the wings faintly tinged with fuscous; 

 the bands of the abdomen are bright yellow, the apical segment black 

 with a yellow spot on each side at tip ; beneath, the second segment 

 has a large, long, subcompressed, curved, acute, claw-like tooth, very 

 conspicuous. Length 6 lines ; expanse of wings 10 lines. 



Collection. — Ent. Soc. Philad. Two ( % $ ) specimens. 



