1865.] 121 



tarsi rufo-fulvous, with pubescence of the same color. Abdomen shin- 

 ing black, with a beautiful iridescent reflection, clothed with a deep 

 yellowish pubescence, which becomes deep-fulvous at the apex, the 

 punctures distinct and closer towards the tip ; basal segment with a 

 broad, apical, deep yellow band, sometimes occupying the apical half of 

 the segment, and emarginate in front ; second and third segments each 

 with a narrow, apical, sinuate, deep yellow band, continued beneath 

 and emarginate on the middle both above and beneath ; in one specimen 

 the bands are broader and somewhat similar to the markings on the 

 female ; apical margin of the fourth segment, and the remaining seg- 

 ments obscure rufo-fulvous ; apical segment above silvery-sericeous ; 

 in one specimen the second ventral segment is almost entirely yellow- 

 ish, and the apical margins of the remaining segments are obscure yel- 

 lowish. Length 8 J lines; expanse of wings 14 \ lines. 

 Collection. — Ent. Soc. Philad. Two ? , two % specimens. 



Fam. POMPILLD^L 



Genus POMPILUS, Fabr. 



Sec. 1. — Wings mostly ferruginous or yellowish. 



* Body black or blue. 

 Pompilus ignipennis, n. sp. 



Black; abdomen tinged witb blue; antennae orange-yellow; wings bright 

 ferruginous, the apex more or less ferruginous; legs spinose. 



Female. — Dull black, slightly tinged with bluish, clothed with scat- 

 tering black pubescence; face and clypeus somewhat purplish in certain 

 lights, the latter prominent; antennae oi'ange-yellow, involute, the basal 

 segment slightly dusky. Thorax dull black, with a slight blue or violet 

 reflection ; metathorax abruptly rounded behind, with coarse, deep, 

 transverse striae, especially on the sides and behind, obsolete at the 

 base, these striae are less distinct in the smaller specimens, the middle 

 with a shallow longitudinal furrow. Wings bright ferruginous, more 

 or less fuliginous at the base and apex. Legs black, tinged with bluish, 

 all the tarsi spinose ; the intermediate tibiae with a double row of short 

 spines, the posterior pair serrate, also with a double row of short spines ; 

 the inner apical spine of the posterior tibiae densely ciliated near the 

 base. Abdomen smooth, with a changeable obscure bluish, greenish 

 and purplish reflection, the apex clothed with rather long fuscous pube- 

 scence. Length 6* — 9 lines; expanse of wings 10 — 15 lines. 



Male. — Resembles the female, but is much smaller and slenderer, the 

 antennae longer and not involute, the wings more deeply and broadly 

 fuliginous at tips, the legs slenderer and less spinose, and the metatho- 



