AMERICAN COLEOPTERA. 155 



C pilosa Say. — Form moderately elongate, pieeous, elytra with faint greenish 

 lustre, surface very distinctly pilose. Head coarsely and deeply not densely 

 punctured. Antennae rufo-testaceous. Thorax about as wide as long, narrower 

 at base, sides arcuate, slightly sinuate posteriorly, narrowly margined, the margin 

 slightly translucent in front and near the hind angles which are rectangular 

 and slightly prominent, disc moderately convex, coarsely and deeply punctured, 

 median line vaguely impressed. Elytra oval scarcely wider behind, with deeply 

 impressed punctured striae, the intervals slightly convex and rather coarsely, 

 irregularly punctured. Prothorax beneath coarsely and moderately densely punc- 

 tured, metasternum at sides coarsely and less deeply punctured, the punctures 

 extending also on the inflexed sides of the elytra. Abdomen sparsely punctured. 

 Legs rufo-testaceous. Length .38— .44 inch ; 9.5 — 10 mm. 

 Sexual characters as in cribrata. 



Excepting unkolor the present is the only species in which the thorax 

 is not longer than wide. 



This is the common species of the Middle States extending to Canada. 



C borealis Lee. — Form slender, pieeous, antennae and legs pale, elytra with 

 slight greenish lustre with humeral spot and narrow margin pale. Head very 

 sparsely punctate, a little more densely over the eyes. Thorax usually a little 

 longer than wide, narrower at base, sides irregularly arcuate, slightly sinuate in 

 front of the hind angles which are distinct but not prominent, margin narrowly 

 reflexed, disc convex, median line scarcely impressed, surface not densely punctate. 

 Elytra oval not much wider posteriorly, with deeply impressed punctured striae, 

 the intervals flat, irregularly biseriately punctate. Prothorax beneath and sides 

 of metasternum rather sparsely punctate. Abdomen nearly smooth. Length 

 .30— .36 inch ; 7.5—9 mm. 



Sexual characters as in cribrata. 



Resembles pilosa and cribrata but differs from both in the constant 

 humeral pale space and the more finely and sparsely punctured thorax. 

 It is also more feebly pubescent than either. 



Occurs from Nova Scotia to Hudson's Bay Territory. 



C neglecta Hald. — Form slender, pieeous, shining, elytra usually somewhat 

 paler but without distinctly marked humeral spot. Head very sparsely punctate, 

 nearly smooth at middle. Antennas pale. Thorax distinctly longer than wide, 

 narrower at base, sides moderately arcuate, slightly sinuate posteriorly, hind angles 

 rather obtuse, margin extremely narrow, disc moderately convex, median line 

 rather deeply impressed, surface sparsely and irregularly punctate. Elytra oval, 

 a little wider behind, striae deep and coarsely punctured, intervals slightly convex 

 with a single row of punctures much finer than those of the striae. Prothorax 

 beneath coarsely punctured, densely on the sternum, very sparsely at the sides. 

 Metasternum at sides punctured, abdomen nearly smooth. Legs pale. Length 

 .30— .34 inch; 7.5— 8.5 mm. 



Sexual characters as in cribrata. 



This species is readily known by its feebly pubescent surface, the 

 rather deep thoracic channel, the very narrow side margin and by 

 the uniseriate punctures of the interval very much finer than those 

 of the striae. 



