COLEOPTEUA. 11 



narrower and very acutely produced at apex, with the sides not 

 sinuate, but arcuate behind. 



The spots are larger, more irregular, and surrounded by a very 

 distinct halo of reddish-purple, which is not observable in our species ; 

 the elytral punctures vary more in size, are coarser and more distant 

 as a rule, and the elytra are more narrowly and deeply impressed along 

 the suture in ccerulescens. Our species is decidedly more robust. 



3. D. zepliyrus n. sp. — Form nearly as in nitidulus. Pubescence ex- 

 cessively sparse, long, more dense and very fine on the abdomen ; surface 

 shining, minutely reticulated; spaces between the punctures nearly flat. 

 Head large; interocular surface trilobed by the very strongly impressed 

 longitudinal sulcations ; intermediate surface strongly and nearly evenly 

 convex ; punctures very fine, distant by much more than their own widths 

 on the convex portions, closely crowded, nearly coalescent in the sulcations ; 

 antennae as long as the head and prothorax together ; third joint but slightly 

 more than one-third longer than the fourth, fourth distinctly longer than the 

 fifth, joints one to eight black, joints of club elongated, much paler ; maxil- 

 lary palpi long, slender, piceous-black throughout, last joint densely pubes- 

 cent. Prothorax widest slightly behind the middle, where it is much nar- 

 rower than long, suddenly and feebly constricted just beliind the apex : sides 

 strongly sinuate posteriorly; basal angles nearly right; posterior margin 

 slightly longer and less arcuate than the anterior, the latter feebly arcuate ; 

 surface strongly and transversely impressed just behind the apex, very 

 strongly tuberculate near each basal angle, very strongly and rather abruptly 

 convex in the middle of the disk ; punctures very minute and sparse in the 

 middle, much coarser and closer toward the base ; disk of pronotum termi- 

 nated anteriorly and posteriorly by a narrow, acute, elevated border. Elytra 

 at base as wide as the head ; sides very feebly divergent posteriorly, distinctly 

 longer than the width at base, feebly arcuate toward the tip ; together nar- 

 rowly and very deeply emarginate behind ; suture one-third longer than the 

 pronotum ; surface of each elytron impressed along the sutural border toward 

 the base ; punctures coarse, round, nearly evenly distributed, distant by 

 much less than twice their own widths. Abdominal border very strong. 

 Legs long and slender; tibiae toward tips, and tarsi clothed densely with 

 fulvous pubescence. First joint of the posterior tarsi equal in length to 

 the next two together. 



Male. — Posterior edge of fourth ventral segment just visibly emarginate in 

 its middle fourth, contiguous surface feebly flattened ; fifth segment nearly 

 triangularly emarginate in its middle third at apex, emargination seven times 

 as wide as deep, contiguous surface strongly flattened throughout ; sixth 

 segment deeply and broadly emarginate at tip, exterior angles of emargina- 

 tion pronounced, sides nearly straight, bottom broadly rounded, about twice 

 as wide as deep ; seventh segment transversely truncate at tip, lateral spines 

 strong. 



Female. — Posterior edge of fifth ventral segment very feebly and narrowly 

 emarginate in the middle ; sixth segment acutely produced at tip. 



Length 4.S mm. 



