NORTH AMERICAN COLEOPTERA. 297 



senee of the basal marginal line, from the second by the absence of 

 the oblique metasternal line. To lateralis it is more closely related, 

 and seems to differ only in the darker antennte and paljji. It seems 

 to be therefore intermediate between lateralis and obsoletus, the latter 

 having similar palpi, but an entirely black thorax. 



Occurs from Alaska southward to Washington and California. 



C lateralis Marsh. --Oval, moderately convex, piceoiis black, moderately 

 shining, sides of thorax pale, elytra reddish brown, apex somewhat paler. An- 

 teuuee rufo-testaceoiis, club darker. Palpi pale testaceous. Head moderately 

 punctate, not closely nor coarsely. Thorax transverse, regularly arcuate from 

 base to apex, basal marginal line and ante-basal impressions wanting, surface 

 moderately, not closely punctate, although a little variable. Elytra striate, striae 

 closely punctate, deeper near the apex, intervals fiat, more convex at apex, closely 

 punctulate, but more sparsely near the apex, tenth stria not impressed, replaced 

 by a row of punctures. Body beneath black, opaque ; metasternal area shining, 

 sparsely punctate. Prosternum distinctly carinate, mesosternal elevation linear. 

 Legs rufo-testaceous. Length .10— .12 inch. ; 2.5—3 mm. 



This species closely resembles fulvipennis, and is usually mixed 

 with it in the specimens examined by me, but it may readily be 

 known by the pale palpi and antennae. The punctures of the elytra 

 are also rather more distinct and closer than in that species. The 

 sides of the thorax vary in the extent of the pale border. It is also 

 similar to hcemorrhoidalis, but the latter has the metasternal area 

 continued by the oblique line. 



Occurs in Alaska and the coast regions to California. It is widely 

 distributed in middle and northern Europe, extending to Siberia. 



C indistiiictus n. sp. — Oval, moderately convex, piceous black, shining; 

 sides of thorax slightly paler, an indistinct spot on umbone.and a transversely 

 oval pale spot near the apex of the elytra, divided by the suture, not reaching 

 the apical margin. Palpi piceo testaceous, last joint piceous. Antennse entirely 

 pale rufo-testaceous. Head not closely nor coarsely punctate. Thorax trans- 

 verse, the sides arcuately narrowed to the front, basal marginal line and basal 

 impressions wanting; surface moderately not closely punctate, the punctures 

 finer and more distant at sides and apex. Elytra ten-striate, the tenth feeble, 

 strife crenately punctate, slightly deeply at apex, intervals flat, moderately 

 closely punctate on the disc, more finely than the thorax ; epipleurse piceo-ru- 

 fous. Body beneath opaque, black ; metasternal area smooth, sparsely punctu- 

 late. Prosternum distinctly carinate, mesosternal elevation very narrow. Legs 

 piceo-rufous. Length .10— .12 inch. ; 2.5—3 mm. 



This species resembles analis, but differs in having the eighth in- 

 terval with two rows of punctures. The subapical pale space of the 

 elytra is always separated from the margin by a dark space, while 

 in analis the spot is nearly always marginal. It could not be con- 



TRANS. AM. ENT. SOC. XVII. (38) SEPTEMBER, 1890. 



