102 Bulletin of the Brooklyn Entomological Society Vol. XII 



length ; head not narrowed behind the eyes ; postocellar line about half as 

 long as the ocellocular line; third antennal joint one fourth longer than the 

 fourth; scutum coarsely punctate with some of the punctures confluent; 

 scutellum striato-punctate ; basal dorsal area of propodeum depressed; 

 rugose, the sides and posterior face reticulate ; petiole not sulcate laterally, 

 subequal in length to the hind basitarsis. Black ; wings hyaline, the radial 

 area somewhat dusky. 



Male. — Length 8.5 mm. Clypeus flat, closely punctured, the anterior 

 margin with a median emargination ; distance between the eyes at the 

 clypeus distinctly less than the length of an eye; front and vertex sculp- 

 tured like female; seen from above the anterior width of the head is twice 

 as great as the cephalo-caudad length; head distinctly narrowing behind 

 the eyes; flagellum simple; the third antennal joint one fourth longer than 

 the fourth ; scutum shining, with large separate punctures ; scutellum and 

 propodeum as in female; petiole subequal with the hind basitarsis. Color 

 as in female. 



Type Locality. — Falls Church, Virginia. Described from three females 

 and five males reared from a decaying tulip stump by William Middleton. 



Type. — Cat. No. 21565, U. S. Nat. Mus. 



List of the Neactic Species of Pemphredon Latreille Sensu Latore 



/ 



angularis Fox. 



bipartior Fox = Diphlebus. 



cockerelli Rohwer. 



concolor Say (Fox). 



concolor Provancher (not Say) =provancheri Ashmead. 



confertim Fox. 



errans Rohwer. 



foxii Rohwer. ' 



giffardi Rohwer = Diphlebus. 



grinnelli Rohwer = Diphlebus. 



harbecki Rohwer = Diphlebus. ' 



inornatus Say (Fox) = Diphlebus. 



marginatus Say — probably Passaloecus. 



montanus Dahlbom — a European species recorded from British Columbia 



by Kohl. 

 morio Cresson = concolor Say (Fox), 

 nearcticus Kohl, 

 provancheri Ashmead. 

 rileyi Fox. 

 shawii Rohwer. 

 tenax Fox = Diphlebus. 

 tinctipennis Cameron, 

 virginiana Rohwer. 



