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REVISION OF THE GENUS EXETASTES CUSHMAN 279 



by more or less distinct irregular ridges, apical carina lacking, spiracles 

 elongate and nearly touching pleural carinae. 



Legs slender; hind femur more than three-fourths as long as tibia; 

 inner hind calcarium more than half as long as basitarsus; apical 

 joint of hind tarsus shorter than third. 



Wings: Apical abscissa of radius distinctly curved at base, barely 

 a half longer than basal abscissa; areolet shortly petiolate, irregular, 

 recurrent before middle; second discoidal cell rather narrow, basal 

 abscissa of subdiscoideus more than a half longer than second recurrent, 

 the latter strongly curved above; nervulus distinctly postf ureal; 

 abscissula fully twice as long as intercubitella. 



Abdomen rather slender, strongly compressed apically; first tergite 

 fully twice as long as broad at apex, petiole flattened and coarsely 

 pimctate laterally; second tergite longer than broad at base; ovi- 

 positor short, straight, sheath barely half as long as first tergite. 



Head and thorax black; apical portion of clj^peus frequently brown- 

 ish or separated from basal portion by a reddish hne; mandible 

 usually more or less ferruginous, scape entirely so; flagellum rarely 

 wdtli a distinct incomplete yellow annulus, though frequently with 

 this obsoletely indicated; anterior margin and humeral angles of 

 pronotum, tegulae, mesoscutum, and scutellum ferruginous, the last 

 and the collar sometimes more yellowish; legs ferruginous, coxae 

 more or less black at base, tibiae sometimes yellowish at base, hind 

 tarsus yellowish on middle joints, hind tibia at apex and basitarsus 

 sometimes infuscate; wings dilute yellowish infumate, stigma dark 

 stramineous, veins blackish; abdomen ferruginous; sheath ferruginous, 

 more or less infuscate at base. 



Male. — Remarkably hke the female in structure, sculpture, and 

 color. 



Type locality. — Vancouver, British Columbia. 



Ty^^e.— U.S.N. M. no. 51808. 



Paratypes. — Canadian National Collection; Oregon State College 

 of Agriculture. 



Remarks. — A northwestern species represented by eight females 

 and two males ranging from Alaska to Oregon as follows: The type 

 and another female labeled simply "Vane"; one female. Fort Wrangell, 

 Alaska, Wickham; one female, Chilcotin, British Columbia, Septem- 

 ber 1, 1920, E. R. Buckell; one male, Agassiz, British Columbia, 

 May 10, 1932, R. Glendining; one female and one male, Pullman, 

 Wash., May 10, 1894, and May 4, 1899; two females, Corvallis, Oreg., 

 one July 4, 1925, D. G. Gillespie, the other without additional data; 

 and one female without data in the collection of the Oregon State 

 College of Agriculture. 



