NORTH AMERICAN COLEOPTERA. 35 



leg?* are still paler. These are probably merely less mature speci- 

 mens as no other structural differences have been observed. 



With this species I have united indlstindiis, as there are no valid 

 differences. 



In the two preceding sj:>ecies I have alluded to the characters sepa- 

 rating them from bicolor. 



In its distribution bicolor occupies the region more generally south 

 of that occupied by repandus. It extends from the New England 

 States southAvard through Virginia, thence westwardly to Arizona. 

 It occurs also in Kansas. 



E. eoiifiiiis Lee, New Species 186G, 11. 152. — Oval, convex, nearly eiiually 

 obtuse at both extremities, black, moderately shining, sparsely clothed with 

 short black hair. Antennae brownish-black, the basal joints scarcely paler. 

 Eyes widely separated on the front. Thorax finely and closely punctured, the 

 basal impressions feeble. Elytra striato-punctate, the punctures moderately 

 coarse and close, becoming finer toward the tip, but distinct, except at the apex ; 

 the interstrial punctures close and slightly rough. Presternum rather coarsely 

 and closely punctured, the side pieces more finely punctured, not rugose, moder- 

 ately shining. Body beneath and abdomen densely punctured, the latter more 

 finely. Middle and posterior tibise with distinct ridges on the outer edge. 

 Length .24 inch ; 6 mm. 



This species differs from all the other black ones in our fauna by 

 its form, the rather widely separated eyes and the almost uniform 

 color of the antennae. The eyes are nearly as widely separated as 

 the width of either eye as seen from above. 



Occurs in Canada, Wisconsin and Nebraska. 



K. toineiitosu!^ Say, Journ. Acad. 1827, p. 293; edit. Lee, ii, p. 305; niger 

 Me'.s., Proc. Acad. 1846, p. 58. — Oval, moderately convex, equally obtuse at either 

 extremity, brown, moderately shining, with short brown pubescence, body be- 

 neath and legs a little paler than above. Autennte uniformly pale brown. Eyes 

 as widely separated on the fi-ont as their own width. Thorax closely, not densely 

 punctured, the basal impressions very indistinct. Elytra striato-punctate, the 

 punctures not coarse, becoming fine posteriorly, and at apical third not distin- 

 guishable from those of the intervals, these latter dense and somewhat rough. 

 Prosternum coarsely punctured, the side pieces granulate-punctate and sub- 

 opaque. Abdomen densely and somewhat roughly punctate. Middle and poste- 

 rior ti bite with distinct transverse ridges on their outer edge. Length .18 — .20 

 inch : 4.5 — 5 mm. 



This species is scarcely at all variable. The eyes are more widely 

 separated than in any other Eustrophus and approach the form seen 

 in Holostrophus. The underside of the thorax is even more roughly 

 sculptured than in arizoiiensis. 



Occurs from the New England States westward to Dacota and 

 Iowa. 



