NO. 1487. NORTH AMERICAN DIGGER WASPS— FERNALD. 387 



edge of the tegula on each side and running- backward, then bending 

 inward on the posterior margin to meet the band from tiie other side; 

 at some angles this band is lost to sight except for a spot above the 

 tegula; the rest of the plate closel}^ rather coarsely punctured and 

 with many very short, erect, dirty white hairs; the anterior median 

 groove rather broad and flat, its edges rather sharper behind, the 

 groove faint in front, fading into the general surface of the plate 

 behind, about one-third the length of the plate; scutellum slightly 

 sericeous, with a very slight median groove behind, more sparsel}^ and 

 finely punctured than the mesonotum, with many very short, erect, 

 Avhitish hairs; postscutellum silvery pubescent as far toward the sides 

 as the groove at the side of the dorsum of the median segment, bear- 

 ing numerous very short, erect, white hairs; dorsimi of the median 

 segment finely transversely aciculate in front, rather obliquel\' so 

 behind, somewhat arched along the middle line except behind, where it 

 is slightly hollowed; quite thickly covered with short, erect, whitish 

 hairs; fovea a rather shallow, elongated crescent; posterior end of the 

 median segment making quite an angle with the dorsum, but less than 

 a right angle; with sparse silvery pubescence on each side of the mid- 

 dle which is not concealed and shows scattered, rather fine elevations; 

 sides at)Ove with aciculations continued from the dorsum, becoming- 

 lost below, where the surface is roughened by scattered, small eleva- 

 tions, this condition extending down to the stigmatal groove; the 

 end and sides of the median segment rather sparsely covered with 

 long, white hairs; meso pleura with a small, silver}^ pubescent spot 

 behind and a little below the prothoracic lobe; the remainder black, 

 with line, rather close punctures above, becoming coarser below; 

 mesosternum and the lower part of the mesopleura whitish sericeous, 

 almost pubescent and with many long, white hairs, which are also pres- 

 ent in less numbers above; metapleura wdth a sparse and sometimes 

 interrupted band of silvery pubescence along the stigmatal groove, 

 and a spot of similar pubescence on the metapleural lobe just beneath 

 the base of the hind wing, the rest of the plate being black, sparsel}^, 

 finely punctured, and with long, whitish hairs, more abundant at and 

 near the pubescent areas; from the hind coxa?, to the middle pair on 

 the side is a whitish-sericeous, broad band; petiole black, straight, 

 with short, whitish hairs and a trace of whitish sericeous in some 

 lights; its length compared with that of the second hind tarsal and 

 tirst filament segments— 22: 28: (30 to 33). 



Abdomen. — Deep ferruginous or resin color, varied with somewhat 

 darker, glistening, rather pointed at both ends; first dorsal plate not 

 rising very al)ruptly or very high from the petiole, slightly yellowish- 

 sericeous; the surface of the dorsal plates with scattered punctures, 

 larger and more abundant posteriorly, the last two plates very notice- 

 ably so and bearing short, ferruginous hairs, longer on the last plate; 



