330 PlKX'EEDINdS OF THE NATIONAL MUSEUM. vol. xxxi. 



Wmg!<. — H^^aline, strong!)' tinged with yellow to beyond the ends 

 of tho cells; the outer marg-in of the fore wings slightly fuliginous; 

 fore wing; outer end of radial cell broadly, quite evenly rounded; 

 third culntal cell extending nearly to the end of the radial; the larger 

 veins ferruginous, the smaller ones j^ellow; hind wing; transverse 

 median vein somewhat curved, making as a whole less than a right 

 angle with the median; discoidal vein not interstitial; cubital vein 

 o])solete ])eyond the transverse cubital which passes ol)liquely forward 

 and outward; teguhe black with a faint ferruginous tinge; slightly 

 black pubescent in front. 



Le(jx. — Black, with a faint ferruginous tinge, particularly toward 

 the tips; fore coxte large, with coarse, scattered punctures and long, 

 black hairs; fore trochanters with a few such; fore femora short, 

 stout, glistening; with a few Idack hairs; fore tibia? with numerous 

 short, stout, black spines and scattered punctures; fore metatarsus 

 with seven quite long, stout, rather bluntly ending comb teeth alter- 

 nating with shorter ones; on the underside is a band of minute, erect, 

 very short, brown hairs; rest of the fore tarsus with many long, stout, 

 blunt spines; these segments and the claws distinctly ferruginous; 

 claws with two blunt teeth near the base on their inner margin; hind 

 tibia longer than its fenuir; hind tibial spine with coarse, spaced teeth 

 on its outer half. 



Male. — Unknown . 



Lencjtli. — Female, 21-25 mm. 



This description was prepared from two specimens marked ''Mt. 

 Shasta dist. Califor." and now in the American Museum of Natural 

 Histor}' in New York. A third specimen there, bearing the same 

 locality label has only six comb teeth, somewhat fuliginovis wings, a 

 more decidedly ferruginous abdomen, a trace of a ferruginous band 

 across the mandible, the radial cell more squarely ended, and with a 

 trace of the cubital vein beyond the transverse cubital in the hind wing. 



This rare species seems to be ver^^ limited in its distribution, so far 

 as the few specimens now known go, it having been taken only in 

 California and Beaver canyon, Utah (one specimen in the Brooklvn 

 Museum). Whether it is a good species or onlv a marked variety of 

 the last can hardly be determined without a larger series for study. 



Subgenus PRIONONYX Dahlbom (genus). 



PriDitoni/.i- Dahlbom, Hyiii. Eur., 1, 1845, p. 439. 



Ifdrpadopus Synru, Cat. Hym. Brit. Mus., IV, 1856, p. 204. 



Gastrosphaeria A. Cost.v, Fauna Napoli. Sphecid., 1858, p. 10. 



Ilarpddopus — GostrospJiapvia — Prionotn/x Kohl, Ann. natur. Hnfmus. Wien, V, 



1890, p. 113. 

 Harpactopus Kohl, Ann. natur. llofmus. Wien, XI, 1896, p. 319. 



Type. — Chlorion {Prauioni/.r) ffioime Fabricius, Syst. Ent., 1775, 

 p. 346. 



