134 [January 



Sec. 3. — Wings entirely blackish-violaceous. 

 Pepsis ruficomis, Fabr. 



Sphex ruficomis, Fabr. Ent. Syst. ii, p. 219. 



Pepsis ruficomis, Fabr. Syst. Piez. p. 215. Beauv. Ins. Afriq. et Ame'r. p. 94. 

 pi. 2, fig. 1. St. Farg. et Serv. Ency. Meth. x, p. 64. 

 Dahlb. Hym. Europ. i, p. 119. St. Farg. Hym. iii, p. 480. 

 Collection. — Ent. Soc. Philad. Six 9 , seven % specimens. 



Sec. 4. — Wings blackish, with a large ferruginous mark. 

 Pepsis ignicornis, n. sp. 



Black; abdomen with a purple-blue reflection; antennae except extreme base, 

 fulvo-ferruginous ; wings blackish-violaceous, with a large, irregular ferrugi- 

 nous mark about the costal middle. 



Male. — Deep black, slightly pubescent ; clypeus, labrum and mandi- 

 bles, shining- black; antennae two-thirds the length of the body, thick- 

 ened, bright ferruginous, the two basal joints black. Thorax velvety- 

 black, with a very faint bluish reflection in certain lights; metathorax 

 narrow, elongate, transversely striated, especially towards the tip. the 

 dorsal middle with a shallow longitudinal furrow. Wings large, uni- 

 formly dark fuscous, with a very strong violet reflection ; near the costal 

 middle a large, irregular, bright ferruginous stain ; nervures black. 

 Legs black, with a beautiful hluish reflection. Abdomen black, with 

 a strong, beautiful purplish-blue reflection. Length 9 J lines; expanse 

 id' wings 20 lines. 



Collection. — Ent. Soc. Philad. ( )ne specimen. 



Closely allied to P. ruficomis. but is readily distinguished from that 

 species by the bright ferruginous stain on the anterior wings. It may. 

 however, be ouly a variety. 



Fam. SPHEGID.E. 



Genus AMMOPHILA, Kirby. 

 Ammophila apicalis, Guer. 

 Ammophila apicalis, Guer. Icon. Reg. Anim. iii, p. 435, pi. 70, fig. 3; LaSagra's 

 Hist. Cuba, Ins. p. 763. 

 Collection. — Ent. Soc. Philad. Six specimens. 



Genus PELOP(EUS, Latr. 

 Pelopoeus cementarius, Drury. 



Sphex cementaria, Drury, Ins. i, p. 105, pi. 44, fig. 6 — 8. 



Sphex flavipunctata, Christ. Hymn. p. 301, pi. 30, fig. 1. 



Sphex fiavomaeulata, DeGeer, Mem. Ins. iii, p. 588, pi. 30, fig. 4. 



Sphex lunata, Fabr. Ent. Syst. ii, p. 203. 



Pelopceus lunatus, Fabr. Syst. Piez. p. 203. Beauv. Ins. Afriq. et Amer. p. 50, 



pi. 7, fig. 4. Gue'r. Icon. Reg. Anim. p. 436, pi. 70, fig. 5 ; 



LaSagra's Hist. Cuba, Ins. p. 763. Dahlb. Hym. Europ. i, 



p. 23. St. Farg. et Serv. Encyl. Meth. x, p. 35. St. Farg. 



Hym. iii, p. 312. 



