1935 ] 
New Nearctic Mecoptera 
119 
types, collected at Kaslo and Lillooet, B. C. Five additional 
specimens, three males and two females, are present in the 
material sent to me by Dr. Philip. All were taken in Rav- 
alli County, Montana, two at Gird’s Creek (Nov. 2, 1984) 
and the others at Como Lake (Jan. 6, 1935) by W. L. Jelli- 
son. Since the Montana locality is almost two hundred and 
fifty miles south of Kaslo, the range of the species is ex- 
tended considerably by the new material. These specimens 
have also enabled us to make a better diagnosis of the spe- 
cies than was possible with the type material alone. The fe- 
males, of course, are readily distinguished by the complete 
loss of the fore wing pads. Both males and females are 
covered with a long, white pilosity, longer than that of any 
of the other species of Boreus except two of the species de- 
scribed above (nix and pilosus ) . The hypandrium of the 
male (figure 9) is long and slender, the sides in the distal 
half being nearly parallel. 
Boreus elegans n. sp. (Figures 8, 12.) 
Male : length, 3. 5-3. 8 mm. ; wings and legs light brown, al- 
most yellow; hypandrium, rostrum and pronotum reddish 
brown; eyes dark red; head and abdomen dark reddish 
brown ; fine, white pilosity over body, well developed on the 
abdominal terga; pronotum with two rows of long, black 
spines; fore wings long and very broad, two and one-half 
times as long as the rostrum and broader than in any other 
species of the genus, the outer margins almost straight; 
hypandrium entire, narrowly triangular ; rostrum not quite 
one and one-half times the length of the eyes. Female un- 
known. 
Holotype ( $ ) : Vancouver, B. C., Dec. 1930 (H. E. Hin- 
ton) ; in California Academy of Sciences. 
Paratype : 1 $ with same locality data as the holotype ; in 
Museum of Comparative Zoology. 
This is the most striking of the Nearctic species of 
Boreus; it is the only one of our species with a dominant 
reddish coloration. The wings are much like those of the 
eastern nivoriundus, the outer margins being quite straight, 
but they are much longer, being two and one-half times the 
