454 



[June 



pointed at tip ; second submarginal subquadrate. the third rather larger 

 and narrowed towards the marginal. Legs black, spinose; the femora 

 and tibiae tinged with bluish, the tarsi with brownish. Abdomen short, 

 robust, with a deep bluish reflection. Length 3 lines; expanse of wings 

 6 lines. 



One specimen. 



8. Pompilus terminatus, Say. 



Pompilus terminatus. Say, American Entomology, Plate 42. 

 One $ specimen. The figure given by Mr. Say. of this insect, con- 

 veys little or no idea of its natural appearance. The body is deep 

 black, immaculate, with the wings yellow, broadly margined at tip with 

 fuliginous; the specimen before me is 6 lines long, and 10 lines ex- 

 panse of wings. 



9. Pompilus marginatus. Say. 



Pompilus marginatus. Say. Long's Second Expedition, ii, p. 333. 

 One 9 specimen. 



10. Pompilus nigripes, n. sp. 



Purplish-brown ; three basal segments of abdomen ferruginous, apex pice- 

 ous; legs and antennae black: wings fuliginous, with an obscure cloud near 

 the tip; four posterior tibiae serrate. 



Female. — Robust, sparsely pubesceut ; head and thorax uniform 

 purplish-brown, opaque; anterior margin of the clypeus black, trun- 

 cate; tips of mandibles piceous ; antennae brown-black, sericeous ; su- 

 tures of the thorax blackish ; posterior margin of prothorax angular ; 

 metathorax rounded above, abrupt behind, the disk with a very finely 

 impressed longitudinal line. Wings fuliginous, the nervures bordered 

 with darker fuliginous ; the marginal cell, a streak through the second 

 and third submarginal cells and a large spot in the second discoidal 

 cell, dark fuliginous ; third submarginal cell larger than the second 

 and slightly narrowed towards the marginal; posterior wings subhya- 

 line. Legs black, somewhat tinged with brownish especially the tarsi ; 

 four posterior tibiae serrate, and with a double row of short acute spines. 

 Abdomen short, very robust, shining, sessile; the three basal segments 

 orange-ferruginous, darker on the apical margins; remaining segments 

 piceous, paler on the apical margins, the apex pubescent. Length h\ 

 lines ; expanse of wings 9 lines. 



One specimen. Belongs to the subgenus Prwcnemis. 



Genus CEROPALES, Latr. 

 Ceropales fraterna. Smith. 



Ceropales fratema, Smith, Brit. Mus. Cat. iii, p. ISO. 

 One specimen. Differs from Mr. Smith's description only by the 

 clypeus having a large black spot on the disk. 



