124 E. T. ORESSON. 



tarsi, except base, all testaceous or dull fulvous, the posterior tarsi is 

 tiuged with the same color; abdomen small, short, uarrow, subovate, 

 subpetiolate, shining black. Length 24 lines. 



Hah. — Georgia, (Coll. Am. Ent. Soc). 



One % specimen. A very distinct little species, remarkable for the 

 large thorax, small abdomen, and curious shape of the marginal and 

 submarginal cells. 



88. Pompilus (Ageaia) Dakota, n. sp. 



Male. — Slender, black, subopaque, the prothorax, metathorax and 

 coxae clothed with a silvery sericeous pile ; anterior orbits yellow ; 

 clypeus truncate anteriorly; mandibles rufo-testaceous near the tips ; 

 })alpi fuscous, varied with testaceous; antennae long, rather slender, 

 filiform, black above, beneath testaceous at base and toward the tips; 

 thorax more gibbous than usual ; posterior margin of the prothorax 

 subangular; scutellum convex and pubescent; the mesothorax has a 

 small tubercle on the disk; metathorax small, subconvex, densely sil- 

 very in certain lights; wings long, ample, uniformly fuliginous, sub- 

 violaceous, with a transverse, darker cloud beneath the marginal cell, 

 and another at the extreme apex; marginal cell lanceolate; second 

 submarginal cell oblong, subquadrate, pointed towards the base of the 

 wing; third submarginal cell large, shaped as in Fig. 8, a ; legs long, 

 black; coxae silvery sericeous ; anterior tibiae testaceous; intermediate 

 tibiae and all the tarsi more or less brownish; abdomen long, subcla- 

 vate, subpetiolate, subconvex, black, shining, the two apical segments 

 above orange-yellow. Length 5 lines; expanse of wings 10 lines. 



Var. %. — Frontal orbits obscurely yellowish; mandibles piceous; 

 palpi fuscous; antennae orange-yellow, blackish at base and apex; an- 

 terior tibiae and tarsi brownish ; apex of abdomen obscurely testaceous; 

 otherwise same as the other S specimen. 



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



Two S specimens. Should the variety from West Virginia prove 

 to be a distinct species, it may be ndmod pallid iconiis. 



.S9. Pompilus (Agenia) nigropilosus, n. sp. 



Male. — Black, shining, rather thickly clothed with a black pubes- 

 cence, long and dense on the head ; thorax and abdomen with a very 

 short cinereous pile, seen only when viewed in certain lights; clypeus 

 small, truncate anteriorly; uumdibles reddish near the apex ; anteniue 

 moderately long, incrassate, tapering towards the tip, opaque-black ; 

 thorax densely punctured; posterior margin of the prothorax arcuate; 

 disk of metathorax and scutellum flattened; metathorax roughly puuc- 



