158 HYMENOPTERA. 
few scattered sharp spines, the anterior tarsi ciliated exteriorly ; 
the tarsi obscurely rufo-piceous. Abdomen: the apical ventral 
segment having an elongate-ovate fuscous spot. 
Hab. Mexico (Vera Cruz). 
196. PoMPILUS ALGIDUS. B.M. 
Female. Length 11 lines.—Black: body and legs covered 
with purple iridescent pile; the face, clypeus, and mandibles in 
the middle, obscurely ferrugimous ; the scape and three basal 
joints of the flagellum ferruginous beneath. Thorax : the pos- 
terior margin of the prothorax fusco-ferruginous; wings dark 
fuscous, with a brilliant violet iridescence ; the anterior tibize and 
tarsi strongly ciliated exteriorly, the intermediate and posterior 
pairs thickly spinose. Abdomen: the base of the second and 
third segments pale ferruginous, the former obscurely so. 
Hab. North America? 
197. PoMPILUS BIPARTITUS. B.M. 
Pompilus bipartitus, St. Farg. Hym. iii. 439. 36 2. 
Hab. North America; Philadelphia. 
198. PoMPILUS BIGUTTATUS. B.M. 
Pompilus biguttatus, Fabr. Ent. Syst. Supp. p. 249. 18; Syst. 
Piez. 193. 28. 
Say, Bost. Journ. i. 303. 3. 
Hab. North America; Nova Scotia. 
199. PoMPILUS CALIPTERUS. 
Pompilus calipterus, Say, Bost. Journ. i. 302. 1. 
Hab. North America (Indiana). 
200. PoMPILUS EPHIPPIGER. B.M. 
Female. Length 6-83 lines. — Black: the head thinly 
sprinkled with black pubescence; the anterior margin of the 
clypeus emarginate; the posterior margin of the prothorax 
arcuate ; the metathorax rounded, smooth, and having a fine 
sericeous pile of a purple tint; wings dark fuscous, their apical 
margins havmg a darker border; the tibiz and tarsi spmose. 
Abdomen : the second and third segments have a broad yellow 
fascia, the posterior margin of which is emarginate. 
Hab. North America. 
