376 A Preliminary Monograph of the 



the latter distinctly wider than long and one-third as long as the second^ 

 tenth distinctly wider than long. Prothorax widest just before the 

 middle, where the sides are distinctly rounded and obtusely subangu- 

 late, thence very feebly convergent and feebly arcuate to the apex,- 

 more strongly convergent and nearly straight toward base; the latter 

 broadly arcuate, nearly three-fourths as wide as the disk, very much nar- 

 rower than the apex; the latter very feebly arcuate; apical angles 

 slightly obtuse and not distinctly rounded; disk one-fifth wider than 

 long, evenly convex, not at all impressed, minutely and excessively 

 densely punctate; punctures almost in mutual contact, the median im- 

 punctate line short, very narrow, not tumid and very inconspicuous. 

 Elytra subquadrate, rather evenly convex and not at all impressed near 

 the suture, about one-fifth wider and one -third longer than the pro- 

 thorax, finely, very feebly and densely punctate. Abdomen slightly 

 narrower than the elytra, parallel; sides nearly straight; border mode- 

 rate, somewhat deep; surface finely and strongly reticulate, minutely 

 and very densely punctate. Legs normal. Length 2.4 mm. 



Lake Superior 1. 



As must be evident from the description, this very distinct 

 species differs from all the others of the pallidulus group by the 

 longer, coarser, and denser pubescence, and correspondingly 

 denser punctuation, in this respect being allied only to ^?'0?;u??^5. 

 The elytra, also, differ in not being distinctly impressed near 

 the suture. 



57 T, providus n. sp. — Moderately slender, rather convex, black; 

 legs piceous; antennae piceous, fuscous at base; pubescence cinereous, 

 very short, fine and dense, rather conspicuous; integuments alutaceous, 

 elytra a little more shining. Head slightly narrower than the pro- 

 thorax, feebly convex, very finely and extremely densely punctate ; 

 prominences rather large and strong; eyes large, convex, prominent, very 

 coarsely faceted; antennae scarcely as long as the head and prothorax, 

 not very robust, moderately incrassate; joints two to four uniformly 

 and rather rapidly decreasing in length, the second slightly more robust; 

 fourth one-half longer than wide, tenth slightly wider than long. Pro- 

 thorax about one-fourth wider than long, widest at the middle; sides 

 very feebly convergent and distinctly arcuate to the apex, more strongly 

 convergent and nearly straight toward base; the latter broadly arcuate, 

 four-fifths as wide as the disk and very slightly narrower than the apex; 

 the latter truncate ; apical angles nearly right, very narrowly rounded; 

 disk broadly, nearly evenly convex, with two approximate, extremely 

 feeble impressions near the basal margin in the middle; surface very 

 finely and excessively densely punctate, without trace of a median im- 



