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. Blauchard. 



nannla n. sp. 

 Elytra much longer and wider than the prothorax 5 



5 — Form rather stout and 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 

 thau wid^, 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 0.9 mm. Dakota (Bismarck) dakotana n. sp. 



Form similar but rather l^ss 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 

 iihree 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 hespera n. sp. 



6 — Head parallel at the sides in both sexes 7 



Head broadest near the base, at least in the male, sometimes parallel in 



the female 8 



7 — Body slender, convex, parallel, deep shining black throughout, the legs 



