﻿98 PROCSEEDINGS OF THE NATIONAL MUSEUM vol. lOO 



the basal fourth of the middle coxa and the basal half of the hind 

 coxa blackish brown; hind tibia brown. 



Specimens. — 9, Robson, British Columbia, July 2, 1939, H. R. 

 Foxlee (St. Paul). 9, Robson, British Columbia, July 10, 1938, 

 H. R. Foxlee (Townes). 9, Seton Lake, Lillooet, British Columbia, 

 June 27, 1926, J. McDunnough (Ottawa). 9, Shawnigan, British 

 Columbia, July 23, 1904 (Washington), 9, Douglas Canyon, Colo., 

 July 9, 1916, W. D. Edmonston (Washington). 9, Moscow, Idaho, 

 C. V. Piper (Washington), cf, Corvallis, Oreg., July 15, 1896 (Wash- 

 ington). 9, Blue Mountains, Wash., July 1896, C. V. Piper (Wash- 

 ington) . 



This species seems to have about the same range as Pseudotsuga 

 taxifolia (Douglas fir). 



8. AULACOSTETHUS ARIZONICUS, new species 



Figure 16, c 



Forewing about 13.5 mm. long; body and legs black with abdomen red 

 from the apical part of the first tergite to the basal part oj the fourth. 



Type female: Forewing 13.5 mm. long; as seen from above, head 

 0.78 as long as wide; temple strongly evenly convex (fig. 16, c), a 

 little longer and fuller than in A. resutorivorus; first tergite 2.8 as 

 long as wide; ovipositor sheath 1.5 as long as the forewing. Other- 

 wise, structurally similar to A. resutorivorus. 



Black. Wings hyaline, the forewing marked with fuscous as in A. 

 resutorivorus but with the apical wing spot a little larger and darker; 

 abdomen ferruginous, black as follows: base of first tergite, dorsal 

 basal stripe fading out at apical 0.8 of fii'st tergite, apical 0.5 of fourth 

 tergite, and all of the following tergites. 



Male: Unknown. 



Type: 9, Chiricahua Mountains, Ariz., July 26, 1937, D. J. and 

 J. N. Knull (Columbus). 



This species is closely related to A. resutorivorus. 



9. AULACOSTETHUS RESUTORIVORUS (Westwood), new combination 



Figures 15, /; 16, d 



Aulacus Resutorivorus Westwood, Trans. Ent. Soc. London, ser. 2, vol. 1, p. 224, 



1851. Type: $, Hudson Bay (London). 

 Aulacus firmus Cresson, Trans. Amer. Ent. Soc, vol. 7, p. 256, 1879. Type: 



9, Colorado (Philadelphia), (New synonymy.) 

 Aulacus subfirmus Bradley, Ent. Student, vol. 2, p. 31, May 1901. — Viereck, 



Trans. Amer. Ent. Soc, vol. 27, p. 325, Nov. 1901. Type: $ , Riverton, N. J. 



(Philadelphia). (New synonymy.) 



Head exceptionally short, about 0.70 as long as wide (fig. 16, d); occipital 

 carina high and somewhat reflexed. 



