NO. 1487. NOltril AMERICAN DIGGER WASPS— FERNALD. 327 



black, sometimes with a slight ferruginous tinge, nearl}^ straight, as 

 long as the posterior coxa?, with a few scattered punctures and black 

 hairs. 



Abdomen. — Quite high above the petiole, elongate, pointed at both 

 ends, rather sharply bent beneath between the iirst and second seg- 

 ments, yellow ferruginous varied with darker in places, glistening; 

 above; stigma of first dorsal plate behind the middle; a few scattered 

 punctures showing, more abundant posteriorly; fourth plate some- 

 what broadly emarginate behind; sixth plate rather long and narrow, 

 rounded behind; with a very few short browm or black hairs at the 

 sides; beneath; similar to above, but rather darker and somewhat 

 more punctured; all the plates more or less emarginate behind; last 

 plate laterally compressed, almost carinate medially, long, and with 

 quite long, black hairs; the plate projecting beyond the dorsal plate. 



Winc/s. — Uniformly fuliginous, with a slight yellowish tinge and a 

 violet reflection; fore wing; radial cell broadly rounded at tip, extend- 

 ing no farther than the third cubital cell; first transverse cubital vein 

 bent slightly into the first cubital cell; second cubital cell high, nar- 

 row; hind wing; transverse median vein making less than a right 

 angle with the median, though leaving it at right angles; discoidal 

 vein almost or quite interstitial; cubital vein almost obsolete bej^ond 

 the transverse cubital; tegula? black with a faint ferruginous tinge, 

 slightly sericeous. 



Legs. — Black, more or less tinged with dull ferruginous; coxse 

 closel}^, minutely, and also coarsely punctured; with numerous long 

 hairs; trochanters similar!}" marked but the coarse punctures and 

 hairs are less numerous and the latter are shorter; femora rather 

 sparsely, minutely punctured and with a few coarser punctures and 

 hairs; more distinctly tinged with ferruginous; tibia^ closely, finely 

 punctured, sericeous in places in some lights; hind tibiiB as long as 

 their femora; the others shorter; the hind tibite strongly brownish 

 sericeous behind; hind tibial spur with coarse, blunt, spaced teeth on 

 its outer half; fore metatarsi with six long, stout comb teeth; tarsi 

 finely, closelj' punctured; claws with two teeth on the inner edge near 

 the base; blackish at the base, ferruginous elsewhere; the outer tooth 

 may be of either color. 



Male. — Differs from the female as follows: Clypeus with the cen- 

 tral lobe less produced; inner margins of the eyes slightl}' converging; 

 frons, vertex, and cheeks with more of the coarser punctures; as a 

 whole more brownish sericeous and more hairy; the next to the last 

 ventral abdominal plate with a broad, shallow notch; its posterior third 

 very closely, finely punctured and with coarser punctures mingled 

 here and there with the others, and thickly covered with ver}" short, 

 dark hairs; terminal plate very slightly rounded behind, its surface 

 punctured and with hairs like the posterior third of the plate iu front; 



