46 Trans. Acad. Sci. of iSt. Louis. 



mally pubescent and only very feebly impressed; female not differing 

 much from ttie male, the head si trifle smaller, the sixth ventral broadly 

 and very obtusely rounded at tip. Len'^th 9.8 mm.; width 1.6 mm. 

 Rhode Island to Iowa pallipes Grav. 



Male wiih the apex of the fifth ventral truncate or feebly sinuate, not den- 

 tate 8 



8 — Body lavge in size and stout, black throughout, the legs pale, the anten- 

 nae dusky; head longer than wide, about as wide as the elytra, the eyes 

 relatively small and only moderately prominent, the punctures strong 

 and rather close-set; prothorax large, longer than wide, parallel, only 

 slightly narrower than the head, the sides feebly arcuate: punctures 

 rather small and moderately close, not so uneven in distribution as in 

 the Pacific coast species; elytra quadrate, parallel, not longer than 

 wide, equal in length to the prothorax in the male, a little longer in the 

 female, about a fourth wider, the punctures rather small but strong, 

 close-set and confused throughout ; abdomen as wide as the elytra, finely, 

 densely punctate above and beneath. Male with the fifth ventral feebly 

 sinuato-truncate, the sixth with a large triangular emargination, as 

 wide as deep, the angle acute, the surface in prolongation anteriorly 

 broadly flattened, polished and glabrous; female differing but little, the 

 sixth ventral broadly, feebly arcuate at apex. Length 11.0 mm. ; width 

 1.85 mm. New York to Nonh Carolina, Iowa and Missouri, .capito Csy. 



Body very much smaller, less stout and fusiform, rather convex, polished, 

 the vestiture less conspicuous, black, the prothorax and elytra paler, 

 rufo-piceous; legs and antennae pale flavous; head small, elongate, 

 much narrower than the elytra, only slightly inflated behind the eyes, 

 with the sides broadly arcuate, the eyes well developed but not very 

 prominent, the punctures strong but uneven in size and well separated; 

 neck nearly three-fourths as wide as the head; prothorax large, slightly 

 longer than wide, very nearly as wide as the head in the male and wider 

 than the latter in the female, parallel, with the sides broadly, evenly 

 arcuate, the punctures sparse, moderately coarse, impressed ; elytra 

 barely as long as wide, pirallel, as long as the prothorax and distinctly 

 wider, the punctures small but strong, confused throughout and un- 

 usually well separated; abdomen as wide as the elytra, rather tapering 

 behind the middle, flnely, rather sparsely punctate throughout. Male 

 with the fifth ventral evenly and almost rectilinearly truncate, the sixth 

 with a large, evenly triangular emargination which, as in the two pre- 

 ceding species, occupies the entire width of the apex, its sides nearly 

 straight, the angle obtuse, but not distinctly rounded, the notch more 

 than twice as wide as deep, the surface adjoining anteriorly not im- 

 pressed but with a small dull patch which is minutely and transversely 

 rugulose; female differing but slightly, the sixth ventral narrower and 

 obtusely rounded. Length 7.5-8.0 mm.; width 1.3-1.4 mm. New 

 York flaTicorne Lee. 



9 — Pronotum alutaceous because of a very minute and regular micro-retic- 



ulation 10 



Pronotum highly polished, without trace of minute sculpture of any kind; 

 antennae normal 11 



10 — Antennae evenly and gradually incrassate throughout from the end of 



