198 MEMOIRS ON THE COLEOPTERA 



Prothorax much shorter and more transverse, very nearly twice as wide 

 as long; species much smaller in size. Texas 19 



12 Elytra pale, with a large subcentral cloud or broad fascia; species 

 the largest of the genus 13 



Elytra uniform in color throughout; species moderate in size 18 



13 Elytra more elongate, about twice as long as the head and prothorax 

 together. Body elongate-suboval, rather convex, moderately shin- 

 ing, blackish-piceous, the elytra flavo-testaceous, with a large cen- 

 tral piceous cloud, not attaining the sides; under surface nearly 

 black, the legs and epipleura pale flavate; "head very moderate in 

 size, with moderate but prominent eyes, the sulci deep, parallel, not 

 very remote; antennae slender, piceous, gradually pale basally, the 

 medial joints scarcely three times as long as wide; prothorax not 

 quite one-half wider than long, the sides rounded anteriorly, oblique 

 and nearly straight in about posterior half, the obtuse angles re- 

 flexed and feebly prominent, or thickened by the setigerous punc- 

 ture; subbasal impression deep, obtusely subangulate, the depressed 

 surface between it and the base longitudinally strigose; abbreviated 

 stria deeply impressed; elytra elongate-oval and nearly three-fifths 

 longer than wide, one-half wider than the prothorax, widest about 

 the middle, the sides arcuate; four or five striae are easily traceable, 

 the first and second deepest; anterior fovea near basal third. Length 

 2.4-2.8 mm.; width 0.9-1.1 mm. New Jersey to Indiana and Illi- 

 nois. Moderately abundant proximus Say 



Elytra less elongate, never twice as long as the head and prothorax, more 

 oblong as a rule and sometimes rather less convex 14 



14 Head notably small, the prothorax large, with the sides distinctly 

 sinuate near the angles, being parallel for some distance; eyes no- 

 tably flattened. Form oblong-suboval, rather convex, shining, rufo- 

 testaceous, the head not so bright as the pronotum; elytra more 

 flavate, the central blackish cloud large, rounded and wholly discal; 

 under surface pale, the legs flavate; head barely three-fifths as wide 

 as the prothorax and very much narrower than an elytron, the sulci 

 rather narrow, deep and distant; antennae only moderately slender, 

 fuscous, paler basally, fully as long as the elytra; prothorax one-half 

 wider than long, the sides distinctly reflexed, rounded anteriorly, 

 oblique posteriorly, the angles reflexed, right and sharp, the sides 

 of the base toward the angles transverse, not oblique; subbasal im- 

 pression rather deep, subangulate; elytra barely one-half longer 

 than wide, scarcely two-fifths wider than the prothorax, oblong, 

 parallel, with rather strongly arcuate sides and moderately rounded 

 humeri; pedicel nearly half as wide as the base; stria? one and two 

 deep and strong, three to five feeble, though impressed; anterior 

 fovea at basal third. Length 2.8 mm.; width 1.15 mm. Rhode 

 Island (Boston Neck) rhodeanus n. sp. 



Head relatively larger, the prothorax smaller and with the oblique sides 

 posteriorly never more than very faintly sinuate near the always 

 obtuse hind angles; base oblique at the sides; eyes moderate in size, 

 distinctly less flattened 15 



