NORTH AMERICAN COLEOPTKRA. 83 



B.— First Joint of aiitennao of iiormal form; socoikI joint equal to or longer 



than the third. 

 Head having transverse groove. 



Anterior angles of prothorax toothed 10. te.staceim 



Anterior angles not toothed 1 1_ niteiis 



Head having no transverse groove. 



First joint of antennae % equal in length to the three following too-ethor. 



12. piinctatus. 

 First joint of antennae % and 9 equal to or less tlian the next two toffelher; 

 antennae % and 9 tenninated bj' a loose club, formed by enlargement of 

 the last three joints, which are sub-equal. 



Sides of prothorax deeply undulated 13. Iloriii. 



Sides of prothorax entire. 



Posterior angles undeveloped 14. rot/iiiidicollis. 



Posterior ;i.ngles well marked. 



Eyes large, situated at posterior angles of head. I.'), quadrat us. 



Eyes smaller and in aiivance of posterior angles of head. 

 This distance equal to about three times the length of the eve. 



ifi. cei>lialote»<i. 



This distance equal to about the length of the eye. 

 Antennae moniliform ami short. 



Body sub-oylimlrical 17. }in;i;ii<«tulus. 



Body depressed IS. Schwarzi. 



Joints of antennae elongated. 



Sides of prothorax bi striated 19. e.xf I'iealiis. 



o] <• 1. ■ i • 4 I -"• alteruaiis. 



hides of prothorax unistrinte \ ^, ,. 



I 21. ferrug;iiieH!$. 

 Head having no transverse groove; antennae of 'J, filiform or atti'iiuate<I. 

 Head with strong median furrow. 



Eyes large, at posterior angles of head 22. |>ul»o.sceiiN. 



Eyes very small, in advance of posterior angles 2.'!. truiicatiis. 



Head without median furrow 24. puj^illu^i. 



C — First joint of antennae % abnormally modified. 



First joint of antennae % toothed 25. denticoriiis. 



1. li. terillilialis n. sp. 3/a/e. — Body lightly punctured, surface shining. 

 Head and prothorax pale brownish testaceous, together nearly equal in length to 

 the elytra. Elytra much darker, castaneous; the middle portion of each is much 

 paler, thus forming two vittae. Antennae equal in length to the prothorax and 

 elytra together, testaceous; joints sub-equal, elongated ; second joint smallest, last 

 three joints much flattened; all are thickly pubescent, but the pubescence of the 

 last joint is very short and recumbent. Eyes moderate, convex. Head trian"-ular, 

 width across the eyes greater than the breadth of prothorax. Prothorax narrowed 

 strongly behind; sides arcuate and slightly sinuous. Marginal furrows very 

 strong. Elytra slightly narrower than prothorax, strongly margined, striate and 

 obtusely rounded behind; sides parallel, slightly arcuate. Legs moderate, pale 

 testaceous. Length 3.6 mm. 



Female. — Colors throughout same as in male; head and prothorax much shorter 

 and narrower, together equal in length to three-fifths of elyti-a. Elvtra of same 

 length as in male, rather imrniwer, and less obtusely rounded behind. Autonnae 



