AMERICAN HYMENOPTERA. 145 



by 8t. Fargeaii, is attributable to the iridescence of the pile, and is 

 most observable in sunlight. — Smith. 



Hah. — "Pennsylvania; Georgia." Not seen. 



4. Pepsis cyanea. 



Sphe.r cyanea? Linn., Anioen. Acad, vi, p. 412; Syst. Nat. i, )i. 941. 

 Pepsis cyanea, Fabr., Ent. Syst. ii, p. 201; Syst. Piez. p. 211. Beauv., Ins. 

 Afriq. et Amer. p. 38, pi. 1, fig. 3. 

 "Body, antenna; and legs nigro-cyaneous ; abdomen and wings blue, 

 apex fuscous, somewhat pale." 



Ilab. — "United States." — {Beauv.). 

 Not seen. 



5. Pepsis luteicornis. 



I'rp.si.s luteicornis, Fabr., Syst. Piez. p. 214. Beauv., Ins. p. 39, pi. 1, fig. o. 

 St. Farg., Hym. iii, p. 481. 



"■Female. — Black; antennae yellow, the two basal segments black ; 

 disk of metathorax transversely striated; abdomen black, opaque; 

 wings black, opaque, without any reflection. Length 14 lines." — {St. 

 Fargeau.) 



Hah. — " South Carolina." — {Beauv'.) 



Not seen. This species is generally found in South America, and 

 the locality given by Beauvois may be erroneous. The color appears 

 to be black, without any reflections of blue or purple. 



(From the West Indies, Mexico and Panama.) 



6. Pepsis marginata. 



Pepsis warginata, Beauv., Ins. Afriq. et Amer. p. 94, pi. 2, fig. 2, '^ , Z, %. 

 St. Farg. et Serv. Ency. Meth. x. 64. St. Farg., Hym. iii, 

 p. 470. Guer. LaSagra's Hist. Cuba, Ins. p. 761. Cressou, 

 Proc. Ent. Soc. Phil, iv, p. 133. 

 Female. — Black, velvety, with a more or less strong violet or purple 

 refliection over the body and legs; antennae brown sericeous, black at 

 base; metathorax transversely striated, with a shallow channel down 

 the middle; wings bright fulvo-ferruginous, somewhat golden, the ex- 

 treme base black, and the apical margin of both anterior and posterior 

 pair fuliginous, violaceous. Length 9 — 23 lines. 



Male. — More slender than the female, with the wings more broadly 

 black at base and at tip. Length 12 — 16 lines, 

 Hab. — Cuba, (Coll. Am. Ent. Soc). 



Five 9 , four % specimens. Easily recognized by the bright golden 

 ferruginous wings broadly margined with blackish. It varies very 

 much in size. 



TRANS. AMER. ENT. SOC. (19) JUNE, 1867. 



