﻿100 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loo 



head with small, weak, rather close punctures and with some weak 

 wrinkling; as seen from above, the temple more abruptly incurved 

 and therefore shorter and smaller than in the other Nearctic species 

 (fig. 16, d); occipital carina about 0.3 as high as the diameter of the 

 first flagellar segment, somewhat reflexed; propleurum with moder- 

 ately sparse, fine weak punctures; pronotum transversely ridged in 

 the scrobe, the rest closely irregularly punctate or punctatorugose; 

 front edge of pronotum without a projecting tooth; hind coxa above 

 entirely rugosopunctate with rather small punctures, or the sculpture 

 more or less obsolete centrally, leaving a smooth area; tarsal claws 

 with three teeth; abdomen unusually stout, the first tergite about 1.9 

 as long as wide in the male and about 1.6 as long as wide in the female; 

 ovipositor sheath about 1.2 as long as the forewing. 



Black. Wings faintly brownish, marked with fuscous as shown in 

 figure 15, /; legs beyond first trochanters brownish ferruginous to 

 black; abdomen varying from black with a ferruginous lateral mark 

 on the suture between the first and second tergites to ferruginous 

 except for the following black marks: a basal dorsal stripe on the first 

 tergite, a median dorsal transverse band on the fourth tergite, a 

 larger one on the fifth tergite, and all but the ventral parts of the 

 sixth and seventh tergites. A typical coloration is for the abdomen 

 to have a broad red-bordered black saddle on the second tergite, 

 much of its underside red, and the rest black. 



Specimens. — 5 d^, 30 9, from Alberta (Banff at 4,500 feet, Edmon- 

 ton, and Nordegg); British Columbia (Trinity Valley at Lumby); 

 California (Meyers) ; Colorado (South Boulder Canyon) ; Connec- 

 ticut (Norfolk) ; District of Columbia (Rock Creek Park) ; Maine 

 (Paris and Tim Pond Plantation); Michigan (Whitefish Point); 

 Montana (Missoula) ; Ontario (Ottawa) ; Oregon (Alsea in Benton 

 County and Klamath Falls); Pennsylvania (Harrisburg, Hummels- 

 town, and Linglestown) ; Quebec (Fort Coulonge and Hemmingford) ; 

 Virginia (Falls Church); and Washington (Olympia). Dates of 

 capture fall mostly in June, July, and August, those outside these 

 months being May 28 in Rock Creek Park, D. C, and September 25, 

 at Missoula, Mont. Notes on specimens from two localities associate 

 the species with Pinus. 



This species is transcontinental in the Canadian and Transition 

 Zones. It has been collected on Pinus. 



10. AULACOSTETHUS FLAVICRURUS (Bradley), new combination 



Deraiodontus flavicrurus Bradley, Trans. Anier. Ent. Soc, vol. 27, p. 322, 1901. 



Type: 9, Virginia (Philadelphia). 

 Pristaulacus flavipes Kieffer, Arkiv Zool., vol. 1, p. 559, 1904. Type: cf, Illinois 



(Stockholm). (New synonymy.) 



Front margin of pronotum with a forward-projecting tooth; tarsal 

 claws each with three teeth. 



