HENRY J. FRANKLIN. 477 



Abdomen. — Dorsum : segment one entirely or mostly yellow ; seg- 

 ment two sometimes entirely yellow, sometimes yellow in the middle 

 with a black spot on each side, and sometimes entirely black ; seg- 

 ment three entirely yellow, yellow on the sides and more or less black 

 in the middle, or even nearly or entirely black ; segment four yellow ; 

 segment five black, sometimes with a slight sprinkling of yellowish or 

 ferruginous hairs ; segment six often entirely clothed with ferruginous 

 pile, but frequently with more or less black pile on the basal portion; 

 segment seven with ferruginous or yellowish-ferruginous pile. Venter, 

 at least on the sides, with considerable yellow pile. 



Genitalia. — Outer spatha (fig. 54) with side and hind margins 

 outcurved ; the anterior margin deeply, broadly and evenly incurved ; 

 the ventral surface with a patch of scattering long hairs on each side 

 of the middle. Inner spatha (fig. 146) with apical portion unusually 

 narrow for its length ; the margin rounded at the apex ; ventral sur- 

 face rather heavily clothed with moderately long and mostly branched 

 hairs on the sides and apex of the apical portion ; an oval fenestra 

 usually present on each side of the middle line, about half-way from 

 the front margin to the apex. Claspers and sagittae as already de- 

 scribed for the group. 



Wing's. — Somewhat stained with brown, often subhyaline ; the fore 

 pair usually darkest in the region beyond the veins. 



Legs. — Mostly dark; the trochanters and femora often with consi- 

 derable yellow pile ; tibis and the very tips of the femora often with con- 

 siderable ferruginous hair ; the tarsi with more or less ferruginous 

 hair. 



Dimensions . — Length, 10| mm. to 14 mm. Spread of wings, 25 mm. 

 to 32 mm. Width of abdomen at second segment, 5^ mm. to 7 mm. 



Habitat. — I have records of this species as follows : Alaska 

 (Fort Wrangle, Juneau, Sitka and Fox Point), Alberta 

 (Banff), British Columbia (Metlakatla), Washington (Olym- 

 pic Mountains), Colorado (Ward and Pagosa Peak), New 

 York (Brant Lake and Otto), Nova Scotia (Weymouth — P. 

 G. Bolster collector) and New Hampshire (Durham, Web- 

 ster and Mt. Washington). It is probably also present in 

 the following states : Oregon, northern California, Idaho, 

 Montana, Wyoming, Utah, North Dakota, Minnesota, Wis- 

 consin, Michigan, Vermont, Maine and possibly parts of 

 Massachusetts and Pennsylvania. It probably also ranges 

 throughout a considerable portion of Canada, from the At- 

 lantic to the Pacific Ocean. It is mainly a Boreal species, 

 but it runs over into the Transition Zone somewhat. 



TRANS. AM. KNT. SOC. , XXXVIII. 



