82 Trans. AcacL Sci. of St. Louis. 



impressed and sparse; elytra fully as long as the prothorax, at base 

 equal in width to the latter but a little narrower than the head, the sides 

 sensibly diverging from the basal angles to the apex and nearly straight, 

 slightly longer than wide, the punctures impressed; abdomen broad, 

 parallel, as wide as the elytra, minutely and not very closely 

 puuctulate; legs moderately long and stout. Male unknown, the sixth 

 ventral of the female broadly and obtusely lobed at apex. Length 

 (contracted) 7.8 mm.; width 1.4 mm. New Jersey.. subaequale u. sp. 

 Elytral punctures closer, more distinct and not so obviously seriate; form 

 less stout, similar in coloration, the elytra gradually becoming rufous 

 in apical third; head much smaller, with the basal angles more broadly 

 rounded, equal in width to the prothorax and slightly narrower than the 

 elytra, the sides more nearly parallel, similarly punctate; prothorax 

 smaller but otherwise nearly similar, the punctures rather stronger 

 and less sparse; elytra smaller, subparallel or only slightly broader 

 behind, not quite as long as the prothorax and distinctly wider through- 

 out, about as long as wide; abdomen as wide as the elytra, finely and 

 moderately densely puuctulate; legs nearly similar. Male with the 

 fourth and fifth ventrals wholly uuraodifled, the sixth with a very narrow 

 and feeble impression along the median line, extending to about apical 

 third, the surface thence unmodified to the rectilinearly truncate apex, 

 except a very small feeble narrow tumidity at the margin, the edge not 

 distinctly modified. Length 10.0 mm.; width 1.3 mm. Illinois, New 

 York and Ontario procernm n. sp . 



5 — Form less stout than in the preceding species, rather strongly convex 



and almost exactly parallel, polished, piceous-black in color, the elytra 

 rufous, becoming black near the base; legs rufous, the antennae 

 piceous; head large, quite distinctly wider than the elytra, slightly 

 broader near the base, the basal angles only moderately rounded; 

 punctures sparse but deep toward the sides, very remote elsewhere; 

 prothorax distinctly narrower than the head, a fourth longer than wide, 

 slightly narrowed posteriorly throughout, the angles rounded, the 

 punctures sp.arse, coarse and deep ; elytra small, quadrate, subparallel, 

 equal in width to the prothorax and much shorter, very coarsely, only 

 moderately sparsely and irregularly punctate; abdomen parallel, not 

 quite as wide as the elytral apex, minutely and not very closely punc'.u- 

 late; legs stout. Male unknown; female with the sixth ventral obtusely 

 produced and roundly lobed at apex. Length 8.5 mm. ; width I.l mm. 

 New Jersey, — Prof. J. B. Smith praelongum n. sp. 



6 — Elytra more or less obviously longer and wider than the prothorax in 



both sexes 7 



Elytra equal in length to the prothorax or a liitle shorter; legs rufous 

 throughout 8 



7 — Large species^ the legs rufous in color, shining, the antennae rufo- 



piceous; punctures of the head and pronotum coarse, deep and moder- 

 ately sparse, of the elytra sensibly smaller but equally sparse, tending 

 to serial arrangement, of the abdomen very fine and rathsr dense; head 

 not quite as wide as the elytra, broader behind than at the eyes, the 

 angles only moderately broadly rounded; gular sutures approximate, 

 converging basally; prothorax oblong, only very slightly narrower than 



