HYMENOPTERA, 167 



190. POMPILUS FLAVIPENNIS. 



Calicurgus flavipennis, St. Farg. Hym. iii. 407. 14. 

 Hab. Cayenne. 



191. PoMPiLus Americanus.- — " B.M. 



Pompilus Amerieanus, Palis, de Beauv.Ins. Afric. et Am^r. p. 117- 



t. 3. f. 6. 

 Pompilus trifasciatus, Palis, de Beauv. Ins. Afric. et Amer. p. 118. 



t. 3. f. 6. 

 Pompilus plebejuS;, Dahlb. Hym. Europ. i. 60. 



Hab. North America. 



This species is very closely allied to P. viaticus, of which it 

 may be considered the American form ; it differs in having the 

 posterior margin of the prothorax angulated, and in the basal 

 segment gradually declining to its base. 



192. Pompilus atramentarius. —""" "^ B.M. 

 Pompilus atramentarius, Dahlb. Hym. Europ. i. 48. 



Hab. North America. 



193. Pompilus atrox.**'"*'''*^ 

 Pompilus atrox, Dahlb. Hym. Europ. i. 63. 

 Hab. South Carolina. 



194. Pompilus architectus. — «—•> B.M. 

 Pompilus (Agenia) architectus. Say, Bost. Journ. i, 303. 2 $ . 

 Hab. United States (Ohio) j Hudson's Bay. 



195. Pompilus apiculatus. B.M. 



Female. Length A\ lines. — Head, thorax and legs black ; the 

 abdomen red ; the entire insect covered with a fine white silky 

 pile, most dense on the face, cheeks, coxae and metathorax ; 

 the clypeus rounded at its anterior margin. Thorax : the 

 posterior margin of the prothorax having a band of silver}' 

 pile, a spot of the same on each side of the scutellum and post- 

 scutellum ; the metathorax rounded, and having a longitudinal 

 slightly impressed line ; wings fusco-hyaline, the first recurrent 

 nervure entering the second submarginal cell in the middle, the 

 third submarginal cell subpetiolate ; the tibiae and tarsi have a 



