% 



REVISION OF THE GENUS EXETASTES — CUSHMAN 273 



narrower, basal abscissa of subdiscoideus nearly Uvice as long as second 

 recurrent, the latter only moderately curved above ; ovipositor recurved,, 

 sheath nearly as long as first two tergites. 



Black of head and thorax more extensive; fiagellum entirely black; 

 hind coxa more extensively black below and within ; hind tarsus entirely 

 ferruginous ; ^vings only faintly infumate. 



Tyi^e locality. — Sugar Loaf, Colo. 



Type.—U.S.NM. no. 51805. 



Paratypes. — California Academy of Sciences; Canadian National 

 Collection. 



Remarks. — Ten females, the holotype taken July 1 by T. D. A. 

 Cockerell; three collected in Colorado by C. F. Baker; one, Harney 

 Peak, S. Dak., July 22, 1924; one, Custer, S. Dak., July 19, 1924; 

 one, Waterton, Alberta, July 1, 1924, H. L. Leamans; one, Waterton 

 Lakes, Alberta, July 4-11, 1923, J. McDunnough; two. Glacier Na- 

 tional Park, Mont., June 30, 1930, E. C. Van Dyke. 



What is probably the male of this species, though I do not include 

 it in the type series, is represented by a single male in poor condition 

 captured by E. P. Van Duzee on July 23, 1915, at Half Moon Lake,. 

 Tahoe, Calif. It differs from the female in the shorter malar space,, 

 larger ocelli, more slender antennae with all joints at least slightly 

 longer than thick, the propodeum medially and posteriorly rugulose 

 with a distinct apical carina, the red of head and thorax largely re- 

 placed by black, with only supraorbital spots, mesoscutum largely 

 and propodeum partly ferruginous, the yellow brighter. 



16. EXETASTES BREVICORNIS. new species 



Female. — Very closely related to pectinatus, from which it differs 

 principally in having the extended angle of the cheeks somewhat less 

 acute; hind femur barely two-thirds as long as tibia; head, thorax, and 

 coxae less extensively black; fiagellum largely ferruginous and hind 

 femur and tibia blacldsh apically, the tibia distinctly yellow at base. 



Male. — Differs from female in the shorter malar space, larger ocelli,, 

 distinct apical carina of propodeum with two more or less distinct 

 carinae diverging forward from it; more extensively black head and 

 thorax, the latter being sometimes very largely or entirely black 

 laterally, ventrally, and on propodeum; brighter yellow markings; 

 more extensively black liind legs, with the middle tarsal joints yel- 

 lowish. 



Type locality. — Calgary, Alberta. 



Type.— V.S.N. M. no. 51806. 



Paratypes. — Canadian National Collection. 



Remarks. — Four females and six males collected at the type locaHty, 

 July 16-19, 1924, by George Salt; and one female taken July 10, 1932, 

 at Lethbridge, Alberta, by H. L. Seamans. 



