2/2 THE CANADIAN ENTOMOLOGIST. 



;:nd J. II. Wallis at Cvanbrook, 1'.. C. Lillooet, P.. C. and Husavick. Man., also 

 one male taken by J. AI. Aldrich at Anchorage, Alaska. 



Type in the National Collection at ( )tta\va. Five paratypes. No. -^435<S, 

 in the U. S. National Arnseuni. Wrishington, I). C. 



Ernestia bicarina sp. ii. 



Dcscripticni of male. J lead at A'ihrissae al)out as thick as at base of 

 antennae; vibrissae far abo\e the oral margin. f'alpi yellow. ]\yes hairy 

 Cheeks (below the e\es) white pollinose on a l)lack ground, subshining on 

 tlic lower hair)' part, a row of bristles at the oral margin. Distance from the 

 oral margin io base of e}-e eipial to about one-third the eye height. Sides of 

 face covered with silvery pollen; bare; narrowest width slightly less than the 

 length of the second antennal segment. Facial ridges bristly on lower fourth. 

 Facial depression silvery i)ollinose williout any carina. Antennae in male 

 reaching the lowest fourth of face, all three segments ])lacl< ; third segtuent 

 about one and one-fourth times as long as second. Arista thickened (»n basal 

 two-hfths to one-half, the penultimate segment from one and one-half times to 

 twice as long as the first. Width, of front at narrowest point measuring less than 

 the length of the second antennal segment; the front silverv ]K)]linose ; frontal 

 vitta dull, dark-brown, at narrowest |)oint e((ual to the width of either side ot 

 front just cephalad of the (jcellar triangle. No orbital bristles in male, the pro- 

 clitiate ocellar bristles somewhat weak ; the single row of frontal bristles de- 

 scending almost to the base of the third antennal segment. 



Thorax subshining, black, covered with gray pollen; scutellum gray 

 pollinose on a black ground that is very faintly tinged reddish, especially ;it 

 the apex. Three sternopleural bristles and three pairs of dorsocentral niacro- 

 chaetae ; scutellum with three pairs of marginal macrochaetae and an apical 

 cruciate pair. Fegs black, the middle tibiae with two or more bristles on tlie 

 front side near the middle, the liind tibiae without a comb-like row of bristles 

 on the outer side. \Vings hyaline; Kj,-, (third vein) with a group of two to 

 live hairs l)oth above and below at the junction with Ix..^,.. Tegulae white. 



Abdomen subshining; lightl\- silver\- ])ollinose on a black ground. Dis- 

 cal and marginal macrochaetae present on the second, third and fourth abdom- 

 inal segments. The hind margin of the third tergum strongly arcuate. 'J'he 

 fifth tergum distinctly marked (dT bv a suture from the shining sixth and 

 being a third as long laterally as the lateral part of the fourth. The sixth and 

 seventh abdominal segments forming somewhat distended genital segments. 



Genitalia black. The basal ])art of the outer forceps is extended into a 

 l)r(jad, leaf-like portion. The basal i)art of the inner forceps with two median 

 keel-like projections placed side by side and resulting evidently from the si)lit- 

 ting of what was originally one median l<eel-like ])r()jection. 



The horseshoe-shaped indenture extends about two-fifths the distance 

 to the base c^f the fifth sternite. Iv'ich ]irong tipped with a short spine. 



Described from four males from Hear f^ake, li.C, lioseinan, Montana, 

 and Tennessee Pass, Colorado, taken by ?\Iessrs. R. P. Currie and R. Parker. 



Type No. 24350 in the U. vS. National Museum, Washington. D.C. <' )ne 

 paratype in the Canadian National Collection at Ottawa. 



