100 Trans. Acad. Sci. of St. Louis. 
straight at the sides, the angles rather narrowly rounded, the eyes 
moderately small and rather convex; punctures coarse and only moder- 
ately sparse; antennae thick, distinctly shorter than the head and protho- 
rax, gradually thicker distally, the outer joints not quite as long as 
wide; prothorax subparallel, distinctly longer than wide, obviously nar- 
rower than the head, the punctures coarse, deep, moderately sparse and 
evenly, though irregularly, distributed; elytra subparallel, longer than 
wide, a fourth wider than the prothorax, the punctures fine, sparse and 
sublineate; abdomen slightly narrower than the elytra, parallel, 
minutely and rather closely punctulate. Male not at hand; female 
broadly rounded and feebly lobed at tip of the sixth ventral. Length 
4,1 mm.; width 0.75 mm. Massachusets (Lowell), — Mr. F. Blanchard. 
nanula nb. sp. 
Elytra much longer and wider than the prothorax,..eoe. secerececccerees 5 
5—Form rather stout aud only moderately convex, pale brownish-flavate 
in the body and legs, the head, antennae, and, to a less extent, the pro- 
thorax, slightly infuscate— the type probably somewhat immature; 
surface shining; head rather longer than wide, parallel and nearly 
straight at the sides, the angles rather broadly rounded, the neck more 
than half as wide; punctures moderately coarse and rather sparse; 
antennae thick but not enlarged distally, obviously shorter than the 
head and prothorax, the outer joints shorter than wide; prothorax about 
a fifth longer than wide, only very slightly narrower than the head, the 
sides distinctly converging; punctures only moderately coarse, equal to 
those of the head but sparser; elytra unusually large, parallel, longer 
than wide, a third wider and a fourth longer than the prothorax, the 
somewhat coarse punctures arranged in nearly even series; abdomen 
distinctly narrower than the elytra, straight and parallel at the sides, 
rather closely, finely punctulate; legs moderately stout, the hind tarsi 
scarcely three-fourths as long as the tibiae. Male unknown, the sixth 
ventral of the female evenly and broadly rounded behind. Length 5.5 
mm.; width 0.9mm. Dakota (Bismarck)............dakotana n. sp. 
Form similar but rather less stout, deep shining black throughout, the legs 
and antennae piceous-black; head narrower and more elongate, parallel 
and straight at the sides, the angles broadly rounded; eyes at between 
three and four times their own length from the base; antennae thick, 
much shorter than the head and prothorax, the outer joints wider than 
long; prothorax much narrower, distinctly narrower than the head and 
longer than wide, subparallel, the punctures moderately coarse, deep 
and sparse; elytra longer than wide, parallel, two-fifths wider and 
nearly a third longer than the prothorax, the punctures moderately fine 
and sparse and less distinctly serial than in dakotana; abdomen almost as 
wide as the elytra, straight at the sides, finely and rather closely punc- 
tulate; legs moderately stout. Male unknown; female with the sixth 
ventral convex, broadly rounded at tip. Length 5.4 mm.; width 0.85 
mm, British Columbia... .....ssseeccceseescccceccesssH@Spera 0. Sp. 
6 — Head parallel at the sides in both Sexes..... sees cece seer vecsscceseee 7 
Head broadest near the base, at least in the male, sometimes parallel in 
the: female; «scsedbsss ccteedeped bende nen euonnwed.ohe en Sudee Meso pesee GO 
7 — Body slender, convex, parallel, deep shining black throughout, the legs 
