AMERICAN IIYMENOPTERA. lo9 



2. Ceropales nigripes, n. sp. 



Female. — Black, opaque, somewhat sericeous; narrow anterior or- 

 bits, small spot on each side of the clypeus, and a very narrow, faint 

 line on the posterior orbits, white ; antennae rather short, not as long- 

 as the head and thorax; post-scutellum with a white spot; extreme 

 posterior angles of the metathorax with a lunate white spot; wings 

 blacker than in bijnmctata, the violaceous reflection more brilliant ; 

 legs entively black, sericeous, especially the coxae beneath ; abdomen 

 immaculate. Length 7 lines. 



Hah. — Dakota Territory, (Coll. Am. Ent. Soc). 



One $ specimen. Difi'ers from hipunctata only by the shorter an- 

 tennae, and by the legs being entirely black. 



3. Ceropales longipes. 



Ceropales fasciata, Say, Long's Second Exped. ii, p. .3.3.'^, (nee Fabr.) 

 Ceropales longipes, Smith, Brit, Mns. Cat. Hym. iii, p. 179, pi. 4, fig. 2. 

 Ceropales frigida, Smith, Brit. Mus. Cat. Hym. iii, p. ISO. 



Female. — Black ; clypeus, a spot above, labrum, mandibles, and or- 

 bits of the eyes, interrupted on the summit, a spot on the two basal 

 joints of the antennae beneath, posterior margin of the prothorax, as 

 well as a spot on each anterior angle, a short longitudinal line on the 

 disk of the mesothorax, a dot on the scutellum, a spot on each posterior 

 angle of the metathorax followed by an angular line, and a triangular 

 spot on each side of the thorax, above the intermediate coxae, all lemon- 

 yellow; metathorax silvery sericeous in certain lights; wings hyaline, 

 the tips dusky; legs honey-yellow, posterior pair very long; coxae- 

 black, the two anterior pair yellow in front, the posterior pair honey- 

 yellow at tips and with an exterior yellow stripe ; tarsi yellow ; extreme 

 base of the joints of the posterior pair blackish ; abdomen shining, 

 black, first segment with a rather large yellow spot on each side ; four 

 following segments each with a waved, transverse line, slightly inter- 

 rupted in the middle, and dilated into an ovate spot on each extreme 

 side, the fascia on the fifth segment is broadest ; sixth segment with a 

 large yellow spot, nearly occupying the whole segment in one specimen ; 

 venter immaculate. Length 4 — 5 lines. 



^a6.— Florida, (Coll. Mr. E. Norton) ; Illinois, (Coll. Am. Ent. 

 Soc). 



Two 9 specimens. A very handsome species, easily recognized by 

 the black body, and honey-yellow legs, the posterior pair of which are 

 unusually long. 



