45 
the apices. The single type has red elytra. The name nigrita Say was given 
to a wholly black specimen. The male has the last ventral segment strongly 
emarginate, the female truncate, hardly emarginate. 
The first two specimens of A. lacustris Csy. in the type series are 
small males, probably of nigrella Say, with the pronotum more densely 
punctured than usual and without smooth areas. The last two specimens 
are sanguined Lee. Strangalia serricornis Csy. is apparently a small male 
of nigrella with red elytra. All our long series of nigrella are females, except 
one black male, which differs from lacustris only in colour, whereas all the 
lacustris in our collection prove to be males. Considerable variation was 
found in the length of the antennse in both sexes. Occasionally males of 
this species may be found placed in series of A. sanguined. They are much 
longer than sanguinea with the vestiture and prothorax entirely different. 
Seventy specimens have been examined from New York, Nova Scotia, 
Ontario, Quebec, Michigan, Manitoba, Oregon, and British Columbia. 
In literature, Hudson bay, Washington, Nevada, Colorado, New Mexico, 
lake Superior, Georgia, and Maine are cited. 
Host plants: Pinus, Picea, Pseudotsuga (Craighead). 
Type locality: not given. 
We append Col. Casey’s original description of lacustris which appears 
to us to be a colour form of the male of nigrella. 
Anoplodera ( Brachyleptura ) lacustris Csy. 
“L. lacustris n. sp. Body, legs, and antennae entirely black, the elytra pale brownish- 
testaceous, sometimes feebly infuscate near the apex, lustre moderately shining; pubes- 
cence moderately long, very short on the elytra. 
Male. Slender, very convex, head wider than long, the sides behind the eyes parallel 
for a short distance; hind angles right and narrowly rounded; surface feebly convex, 
densely and rather coarsely punctate; antennae three-fourths as long as the body, rather 
stout. Prothorax as in sanguinea , rather coarsely, deeply, very densely punctate, with a 
narrow impunctate median line, the punctures nearly but not quite in mutual contact, 
the interspaces polished. Elytra two and one-half times as long as wide, at base one-third 
wider than the prothorax; sides gradually and distinctly convergent from base to apex, 
the latter very narrowly and obliquely truncate, the truncation deeply sinuate; disk 
rather densely and strongly punctate, the punctures becoming slightly finer toward apex. 
Length 9 0 to 11-0 mm.; width 2-8 to 3-6 mm. 
Female. Moderately slender, smaller than the male, the upper surface much less 
convex. Head similar in form to that of the male, but with the surface very finely and 
excessively densely punctate and dull; antenna? more than one -half as long as the body, 
very slender. Prothorax similar in form to that of the male, but with the surface extremely 
densely punctate, and without trace of median impunctate line, the punctures scarcely 
smaller than in the male and very much larger than those of the head. Elytra scarcely 
more than twice as long as wide, at base rather more than one-third wider than the pro- 
thorax, the humeri distinctly rounded but much more prominent than in the male; sides 
almost parallel, feebly convergent toward apex, the apical truncation as in the male; 
disk very coarsely, deeply, densely punctate, the punctures becoming much finer toward 
the apex, coarser toward base than those of the male. Length 7*8 to 9*0 mm.; width 
2-5 to 3-0 mm.” 
“Michigan (Marquette), Mr. Schwarz” 
“This species is allied to sanguinea Lee., but differs in the much stouter male antennse 
and in the radically different truncation of the elytral apices; the latter in sanguinea is 
rather broad, scarcely at all oblique, and is almost perfectly straight, the angles being 
blunt, in lacustris it is very much narrower, oblique, deeply sinuate and with angles, 
especially the exterior, very acute and prominent nearly as in canadensis. The sexual 
differences throughout the body are extremely and unusually marked, and in the series 
before me the females are decidedly smaller than the males.” 
61136—4 
