AMERICAN HYMENOPTERA. 91 



12. Pompilus subviolaeeus, n. sp. 



Female. — Small, black, with a rather strong purplish or violaceous 

 reflection over the entire body; anterior margin of the clypeus trun- 

 cate ; antennae short, not as long as the head and thorax ; mandibles 

 brownish ; posterior margin of the prothorax arcuate ; metathorax 

 smooth, rounded, with a slightly impressed line down the middle, ab- 

 ruptly truncate behind; legs sparsely but strongly spinose; anterior 

 wings fusco-hyaline, darker at tips, with a purplish reflection, margi- 

 nal cell short, subtriangular, second and third submarginal cells small, 

 the former subquadrate, the latter triangular ; posterior wings hyaline, 

 dusky at tips ; abdomen ovate, convex, immaculate, the purple reflec- 

 tion conspicuous; tip acute. Length Sg — 4^ lires. 



Hah. — Delaware, Illinois, (Coll. Am. Ent. Soc.) ; New York, (Coll. 

 Mr. E. Norton.) 



Five 9 specimens. Closely allied to parvus, of which it may be 

 only a variety ; but the marginal and submarginal cells are difi'erently 

 shaped. 



1.'). Pompilus parvus. 



Pompilus parvus, Cresson, Proc. Ent. Soc. Phil, iv, p. 453, 9- 

 Hah. — Colorado Territory, (Coll. Am. Ent. Soc.) 

 One 9 specimen. Length 3 lines. 



14. Pompilus humilis, n. sp. 



Female. — Small, black, somewhat shining ; head wider than usual, 

 the face clothed with a cinereous pubescence ; anterior margin of the 

 clypeus broadly rounded ; antennae longer than the head and thorax 

 together ; thorax slightly pruinose ; posterior margin of the prothorax 

 subarcuate ; metathorax smooth and rounded, the apex silvery on each 

 side ; wings hyaline, with a double fuliginous band at tip; second sub- 

 marginal cell large and subquadrate, the third much smaller and trian- 

 gular, being much narrowed towards the marginal ; posterior wings 

 hyaline, dusky at tips ; legs black, slightly pruinose, the posterior ti- 

 biae with a white spot above near the base; anterior tarsi strongly cili- 

 ated, the intermediate and posterior tibiae sparsely spinose ; abdomen 

 rather short, ovate, convex, shining black, immaculate, apex slightly 

 compressed. Length 3-2 lines. 



iTaJ.— New. York, (Coll. Am. Ent. Soc.) 



One $ specimen. Recognized at once by the bifasciate apex of the 

 wings and the white spot on the posterior tibiae. 



