AMERICAN HYMENOPTERA. 149 



nearly black, with a slight blue and green iridescence; metathorax 

 transversely strigose ; abdomen subpetiolate." 

 Ilab. — ''Mexico." Not seen. 



18. Pepsis amethystina. 



Sphex amethystina, Fabr.. Ent. Syst. ii, p. 2]0. 



Pepsis amethystina, Fabr., Syst. Piez. p. 215. Beauv., Ins. p. .'^>S, pi. 1, fig. 2. 

 "Obscure blue; head, mandibles, antennae and legs black ; abdomen 

 subscssile." 



llah. — " St. Domingo." 



Not seen. Mr. Smith (^Brit. 31us. Gat. Hym. iii, p. 199) gives the 

 above first two references also to a Pompilus amethystinus from Brazil, 

 {ib. p. 148j. 



19. Pepsis saphirus. 



Pepsis saphirus, Beauv., Ins. p. 39, pi. 1. fig. 4. 

 ■" Blue, antenuje yellow." 

 JTab. — "St. Domingo." Not seen. 



20. Pepsis obscura. 



Pepsis obscura, St. Farg., Hym. iii, p. 490. Smith, Trans. Ent. Soc. London, 

 .3d series, i, p. .36. 



^'■Female. — Antennae black, [tips yellow — Smitli]; head and thorax 

 bluish-black, changing to green on the latter; scutellum strongly elevat- 

 ed ; disk of metathorax transversely striated, with a medial impressed 

 line terminated by a transverse carina; abdomen bluish-black, chang- 

 ing to green ; legs bluish-black ; wings black, violaceous." 



^'■Male. — All the parts violaceous-black, changing to obscure green ; 

 wings with a golden-green reflection ; remainder as in the female." 



Hah. — "Panama." — (^Smith.') Not seen. 



Since the description of Aporus fasciatus % , given above on page 

 137, was printed, I have discovered what seems to be the female of 

 that species, the characters of which may be thus enumerated : 



Aporus fasciatus, Smith. 



i^t'Hif/A;.— Black, smooth and shining; face, clypeus, base of mandi- 

 bles, cheeks and occiput, covered with a dense silvery pile ; tips of 

 mandibles brownish; antennae short, black, the scape silvery beneath; 

 prothorax, mesothorax behind, scutellum, metathorax, and the whole 

 thorax on the sides and beneath, covered with a dense silvery pile ; a 

 transverse black band on the posterior submargin of the prothorax, the 



