AMERICAN HYMENOPTERA. 113 



This species is unknown to me. From the above description the an- 

 tenna) are inferred to be hlac/i-, in which character only it seems to dif- 

 fer from imi/asciatus Say. 



62. Pompilus (Priocnemis) terminatus. 



Pompilus tenninaius, Say, Aiiier. Ent., plate 42; Crcsson, Proe. Ent. Soc. 

 Phil, iv, p. 454. 



S 9- — I51ack, opaque; antennae black in five specimens, orange- 

 yellow, except base, in three specimens; anterior margin of the cly- 

 peus deeply concave; posterior margin of the prothorax subarcuate or 

 slightly subangular; wings bright orange-yellow, the apical margin 

 blackish, sometimes broadly so. Length 4 — 7 lines. 



Hah. — Colorado and Dakota Territories, (Coll. Am. Ent. Soc.) 

 Five 9 , three S specimens. Easily recognized by the black body, 

 and bright yellow wings, tipped with black. 



c:;. Pompilus (Priocnemis) nebulosus. 



Piiicnemis nebulosus, Dalilb., Hyin. Eur. i, p. 96, 9- 



Female. — Black, somewhat shining ; clypeus broadly mai'gined an- 

 teriorly, with a broad, somewhat square, but not a very deep, emargi- 

 nation in the middle; antennae longer than the head and thorax, fili- 

 form, slender at tips; posterior margin of the prothorax arcuate, very 

 slightly subangular; metathorax rounded; wings long, fuliginous, vio- 

 laceous, darker at the apex, in the second submarginal cell, and alonti- 

 the basal series of transverse nervures, base of anterior wings and the 

 posterior wings entirely, paler; marginal cell lonu;, narrow, subacute 

 at tip ; second submarginal longer than broad, pointed towards the 

 base of the wing, and receiving the first recurrent nervure beyond the 

 middle; third submarginal cell larger than the second, narrowed 

 considerably towards the marginal and receiving the second recurrent 

 nervure at about the middle ; basal series of transverse nervures widely 

 dislocated ; legs black, the tibiae and tarsi with numerous short, palish 

 hairs; tarsi brownish, abdomen short, ovate, convex, much narrowed 

 at base, smooth, shining black ; apical segment densely clothed with 

 brown hairs. Length 6 J lines. 



Jfab.—New York, (Coll. Am. Ent. Soc.) 



One 9 specimen. 



64. Pompilus (Priocnemis) fortis, n. sp. 



Female. — liobust, black, shining, clothed with a very short, brown- 

 ish, subsericeous pubescence, more obvious on the head, thorax be- 

 neath and legs ; anterior margin of the clypeus subtruncate, margined 

 and very slightly concave; the front with a finely impressed longitudi- 



TRANS. AMER. ENT. SOC. (15) JUNE, 1867. 



