44 



punctures adjoining or nearly so; clypeus convex, more shining and more 

 distinctly punctured than the face, slightly elevated directly above the 

 apical margin; clypearea wanting; sculpture of the clypeus not hidden by 

 the moustache; labrarea with a broad rounded emargination, polished, its 

 width at base : greatest length : : 9 : 4; width at apex : length down the 

 middle : : 5 : 3; labrum with a fringe of pale-ochreous almost white hairs; 

 joint 3 of antennae : 4 : : 5 : 6; joint 5 and succeeding joints from a little longer 

 than thick to as long as thick except for the apical joint which is nearly twice 

 as long as thick, dullish; flagel almost moniliform in outline; antennae black- 

 ish throughout; mandible atypical, rather robust, extending beyond the 

 outer edge of the labrum and nearly to end of the basal third of its fellow, 

 black except for the apical fourth which is dull reddish; palpi nearly typical; 

 thorax covered with an abundance of whitish hairs; hairs of dorsulum shorter 

 than hairs of mesopleurae; dorsulum dullish, finely reticulated and sparsely 

 punctured, the punctures shallow and from two to five or more puncture- 

 widths apart; notauli represented by an impressed shining line; mesopleurae 

 dullish with whitish hairs throughout, finely reticulated and covered with 

 shallow pits that are close together and poorly defined; scutel hairy and 

 sculptured like the dorsulum; metanotum hairy and sculptured like the 

 dorsulum except that the sculpture is not so dense, anterior edge nearly pol- 

 ished; tegulae brownish stramineous; subcosta brownish, concolorous with 

 the stigma, membrane uniformly tinged with brown; legs blackish except 

 the small joints of the tarsi and hind metatarsi which are rather dark brown; 

 legs covered with whitish hairs; hind metatarsi wider than mid-metatarsi 

 and a little more than half as wide as hind tibiae at apex of the latter; pro- 

 podeum with its enclosure well defined, with irregular ridges, finely reticu- 

 lated, rounded off at apex, rest of upper face densely sculptured and with 

 poorly developed rugae and covered with whitish hair; propodeal pleurae 

 sculptured apparently as in the female, uniformly covered with whitish hairs ; 

 abdomen not fasciate, with its tergum shining, almost polished, finely reticu- 

 lated and distinctly punctured, the punctures mostly three or four puncture- 

 widths apart; first tergite with some erect whitish hairs, second and third 

 tergites with nearly appressed whitish hairs; second tergite with its elevated 

 portion down the middle : depressed portion : : 14 : 9; third and fourth ter- 

 gites hairy like the second and third tergites ; fifth tergite with its basal black- 

 ish portion covered with poorly defined punctures that are as many as four 

 puncture-widths apart; rest of fifth tergite and exposed portion of sixth and 

 seventh tergites with a brownish-stramineous margin; seventh and eighth 

 sternites as in the figures of these parts; rest of tergum with longer hairs than 

 the preceding; hair at apex of abdomen of a pale golden hue; sixth sternite 

 reflexed at apex, seventh and eighth sternites as in the figures of these parts 

 herewith and nearly as in claytoniae; genitalia tangibly different from the 

 latter; cardo faintly sculptured, nearly polished, apically depressed much 

 as in A. vulgaris Viereck; stipes basally beveled much as in the preceding 

 species; cardo pale stramineous; lingam virtually concolorous with cardo; 

 ends of stipes paler stramineous than cardo; rest of hypopygium mostly dark 

 brownish. 



The following records are from the paratypes. 



Females. — Philadelphia, Pennsylvania, May 9, 1875 (W. M. 

 Davis); May 2, 1897 (H. L. Viereck) [A. N. S. P.]. Falls Church, 

 Virginia, April. Great Falls, Virginia, March 20. Ithaca, New- 

 York (N. Banks) [M. C. Z.]. Central Park, Long Island, New 

 York, June 27, 1920, Cornus candidissima, [Jos. Bequaert Collec- 

 tion]. Colebrook, Connecticut, June 8 to 11, 1911, W. M. Wheeler. 

 Mount Vernon, Virginia, April 16, 1916, Prunus avium (A. 

 Wetmore), Stellaria media (W. L. McAtee) ; April 22, 1917, plum, 

 cherry, Salix sericea; April 19, 1917, plum (W. L. McAtee). Great 



