290 PROCEEDINGS OF THE IN^ATIGNAL MUSEUM vol. S4 



Type.—V.S.lSiM. no. 51815. 



Remarks. — Two females and one male, the holotype female and 

 allot3^pe male taken at the type locality July 22 and July 21, 1924, 

 respectively; the paratype female, Norquay Mountain Meadows, 

 5,000-6,000 feet, Banff, Alberta, July 4, 1925, Owen Bryant. 



34. EXETASTES RUFOBALTEATUS. new species 



In general form and structure similar to sublmpressus, from the 

 above description of which it differs as follows: 



Female. — Length 10 mm, antennae 9 mm. 



Head distinctly wider than thorax and more than twice as broad as 

 thick mediallj^; distance between junction of occipital and hypostomal 

 carinae and base of mandible much shorter than basal width of man- 

 dible; eyes very strongly convex; diameter of a lateral ocellus two- 

 thii'ds as long as postocellar line; antenna slender, apically attenuate, 

 53-jointed, first joint of flagellum fully twice as long as second; 

 notauli not indicated; propodeum finely irregularly rugulose; spiracles 

 small and situated their length from the obsolete pleural carinae; 

 first tergite fully three times as long as broad at apex. 



Black; tergites 2-4 and apex of 1 ferruginous; wings hyaline; front 

 and middle tibiae below and hind tibia at base more or less ferruginous. 



Male. — Face, clypeus, malar space, mandibles, palpi, under side of 

 scape, apex of propleurum, mesostemum partty, all coxae and front 

 and middle trochanters and femora beneath, front and middle tibiae 

 and tarsi largely, hind tibia at base, hind basitarsus apically, a median 

 stripe on scutellura, a dot on postscutellum, the tegulae, and sometimes 

 paired spots on anterior margin of mesoscutum yellow; fifth tergite 

 also ferruginous; otherwise essentially like female. 



Type locality. — Glacier Park Station, Mont., 4,800 feet. 



Type.— U.S.N. M. no. 51816. 



Paratypes. — Canadian National Collection; Cornell University. 



Remarks. — Four females and two males; the holotype female with- 

 out additional data; the allotype and another male, Harney Peak, S. 

 Dak., July 21-22, 1924; one female, Banff, Alberta, August 30, 1922, 

 C. B. D. Garrett; one female, Sudbury, Ontario, 1892; and one female, 

 Carbonate, Columbia River, British Columbia, July 7-12, 1908, 2,600 

 feet, J. C. Bradley. 



35. EXETASTES ANGUSTUS, new species 



Similar in form and structure to sublmpressus, from the above 

 description of which it differs as follows: 



Female. — Face twice as broad as long; eyes more strongly convex 

 and more distinct^ convergent; first joint of flagellum fully twice as 

 long as second ; notauli not at all defined ; pleural carinae of propodeum 

 distinct; first tergite not nearl}^ three times as long as broad; sheath 

 very nearly half as long as first tergite. 



