82 Journal New York Entomoloqical Society. [Voi vr. 
coarse but feebly impressed and quite sparse. Length 2.1 mm.; width 1.0 mm. 
Louisiana.. congests, sp. nov. 
20— Male. —Cylindric-oval, not very stout, strongly convex, pale in color probably 
from immaturity, rufo-testaceous, shining; bristles very stout but short, distinct 
and rather close on the prothorax, somewhat sparse on the elytra; head and 
eyes rather well developed, the front flat; clypeus strongly reflexed, triangularly 
bidentate; prothorax two-fifths wider than long, the sides rather strongly con¬ 
vergent and arcuate from base to apex, the latter reflexed and triangularly bi¬ 
dentate; base truncate; punctures quite coarse, deep and close-set; elytra less 
than one-half longer than wide, four-fifths longer than the prothorax, the punc¬ 
tures about equal in size to those of the pronotum but sparser. Length 1.4 
mm. ; width 0.6 mm. California. duplex, sp. nov. 
21— Prosternum normally convex; anterior tibia- externally everted and acute at 
apex; scutellum small, not wider than long; prothorax rounded at the apex;, 
male with the first ventral simple. Male .—Body narrowly cylindric-oval, 
moderately convex, piceous-black, with the legs and antenna pale ; surface 
shining; bristles coarse, pale, erect, moderately sparse, even in length on the 
elytra; head and eyes small; clypeal margin feebly reflexed, bituberculate; pro¬ 
thorax nearly as long as wide, parabolically rounded anteriorly, with a small and 
very feeble median sinuation, the sides becoming straight and parallel toward 1 
base ; punctures fine but perforate, rather close-set; elytra rather more than one- 
half longer than wide, as wide as the prothorax and twice as long, the punc¬ 
tures rather coarse, well separated and subeven in size. Length 2.0 mm. ;. 
width 0.7 mm. California (Lake Tahoe) . hystricula, sp. nov. 
Prosternum broadly and feebly biconcave; anterior tibiae thickened and rounded ex¬ 
ternally at apex ; scutellum larger ; prothorax feebly sinuate from above at the 
converging sides of the apex ; maxillary palpi with the last joint more acutely 
pointed; male with the first ventral foveate at the middle.22 
22—Eyes small, the body more elongate and cylindric...23 
Eyes large and well developed; body stouter and more cylindric-oval.24 
23—Antennal funicle longer than the club. Male .—Moderately convex and shining, 
rather pale castaneous, the bristles stiff, moderately long and rather abundant; 
head rather well developed, the clypeal tubercles small and separated by a fourth 
of the entire width ; prothorax nearly a fourth wider than long, rounded and some¬ 
what lobed at apex, the sides becoming nearly straight and parallel toward? 
base; punctures rather strong and close set though not very coarse; elytra one- 
half longer than wide, as wide as the prothorax and rather more than twice as 
long, the punctures quite coarse, impressed and somewhat close-set. Length 
1.75-1.8 mm.; wddth 0.75 mm. Montana (Missoula). montana, sp. nov. 
Antennal funicle equal in length to the club. Male .—Dark rufo-piceous, the elytra 
black, the legs and antennae pale, shining, the bristles stiff, erect and pale but 
rather sparse throughout; head well developed, the minute tubercles of 
the clypeus separated by a little more than a fourth of the width ; prothorax 
nearly as in tnontana but nearly a third wider than long, with the punctures- 
much less close-set; elytra one-half longer than wide, as wide as the prothorax 
and rather more than twice as long, the punctures moderately coarse, deep and 
