COLEOPTERA. 183 



smaller and more crowded ; supra-antennal tnberculations long, narrow, im- 

 punctate, prominent ; ocular lines meeting at scarcely one length in advance ; 

 antennae much longer than the width of head, rather pale piceous-brown, 

 slightly darker toward tip, basal joints paler, opaque, oehreous ; third joint 

 one-third longer than the fourth, seventh much longer than the eighth, less 

 robust, ninth and tenth scarcely longer than wide, last more elongated ; 

 maxillary palpi very long and slender, pale flavate, third joint very slightly 

 clouded toward tip, very slender, much shorter than the first and second 

 together. Prothorax arcuately and rather rapidly increasing in width to a 

 point slightly behind the middle, where it is much narrower than long ; sides 

 thence very feebly convergent posteriorly and distinctly sinuate ; anterior 

 margin distinctly shorter and more arcuate than the posterior ; the latter 

 nearly straight, and but very slightly shorter than the greatest width of the 

 prothorax ; surface evenly and strongly convex, rather coarsely, closely, and 

 evenly pnnctate ; punctures deeply impressed; interspaces convex; along 

 the middle for a short distance there is a narrow canaliculation, terminating 

 at equal distances from the bases, and apparently formed by coalescent punc- 

 tures. Elytra at base as wide as the head; sides nearly parallel, slightly 

 longer than the width at base, rather strongly arcuate, slightly more strongly 

 so posteriorly ; together broadly, roundly, and very strongly emarginate 

 behind ; suture scarcely one-eighth longer than the pronotum ; surface very 

 convex, feebly and narrowly impressed along the suture, very coarsely, 

 closely, and evenly punctate ; punctures round, deeply impressed, distant by 

 less than their own widths ; interspaces very convex. Abdominal segments 

 decreasing uniformly and very gradually in width, first distinctly narrower 

 than the contiguous elytra, cylindrical, slightly constricted at base ; surface 

 rather coarsely, very closely, and evenly punctate ; punctures rather irregu- 

 lar in outline, somewhat deeply impressed, becoming much smaller and 

 slightly more distant on the posterior segments ; transverse carinae not 

 cusped, arcuate in the middle, finely and somewhat feebly undulate along 

 the posterior edges. Legs short and robust, pale opaque yellowish-brown 

 in color ; first joint of the posterior tarsi slightly shorter than the next two 

 together, distinctly shorter than the fifth ; fourth joints strongly bilobed, 

 lobes narrow. 



Male. — Sixth ventral segment very deeply and narrowly incised at apex, 

 incisure nearly twice as deep as wide, narrowly rounded at the anterior 

 angle, exterior angles rather broadly rounded, sides nearly straight; seventh 

 broadly, roundly, and rather feebly emarginate at apex, lateral teeth very 

 minute, straight. 



Female. — Unknown. 



Length (abdomen extended) 3.1 mm. 



New York, 1. 



The peculiar form of the prothorax will distinguish this species 

 from obsoletus ; other differences are found in tin' structure and 

 punctuation of the elytra and maxillary palpi, and also in the very 

 peculiar opaque, ochreous-yellow color of the legs, which are much 

 less densely pubescent than in the allied species. The sexual char- 



