NORTH AMERICAN COLEOPTERA. 293 



these two stride are as well separated as the others. I can not find 

 that this has any other than a varietal nseauing. 



The mesosternal elevation varies in form, being quite narrow in 

 most specimens, while in others the lower edge forms a well- marked 

 punctured surface about one-third as wide at middle as long. 



Occurs along the entii-e Pacific coast from Alaska to San Diego 

 under sea-weed. Mr. Ulke has some labeled Arizona, but it is difiS- 

 cult to understand how a sea-coast species can occur there, 



C luiiiger Maim. — Elliptical, sub-depressed, piceous, moderately shining, 

 thorax with a small pale spot near the front angles, elytra reddish yellow, with 

 a narrow crescentic transverse space divided by the suture. Autenuse testaceous, 

 club piceous. Palpi piceo-testaceous. Head sparsely indistinctly punctate. 

 Thorax transverse, sides arcuate in front, oblique behind the middle, hind an- 

 gles rectangular, base without marginal line, disc regularly convex, a vague de- 

 pression each side slightly in front of the base, opposite the fourth elytral stria, 

 surface moderately closely punctate, a little more coarsely near the sides. Elytra 

 finely striate, the striae finely punctate, intervals fiat, finely and moderately 

 closely punctate on the disc, alutaceous at apex and sides with the punctures 

 indistinct. Body beneath opaque black, the metasternal area shining and 

 sparsely punctate. Prosteruum feebly carinate, mesosternal carina long and 

 linear. Legs piceous, the femora sparsely punctate and indistinctly alutaceous. 

 Length .16 inch. ; 4 mm. 



Thi.s species is the largest occurring within our faunal limits and 

 with a more depressed form than depressus, which also occurs with us. 



The elytral sculpture is remarkable in the fact that the dorsal 

 region is distinctly punctulate in a triangle, which extends from the 

 humeral angles to the lunate spot, while the space beyond to the 

 apex and side is alutaceous with the punctuation very indistinct. 



The coloration of the elytra varies notably. The typical form is 

 that in which a narrow crescentic band crosses the suture one-third 

 from the apex, with the concavity forward. This may entirely dis- 

 appear so that the elytra are pale luteous. From specimens seen in 

 Mr. Ulke's cabinet it is evident that the crescentic band is merely 

 the remnant of a large discal space. 



This species seems related to the eastern Asiatic type of forms, 

 there being .several species from Japan which I have seen in Dr. 

 Sharp's collection which resemble it. 



Occurs from Alaska southward to California, probably a sea-coast 

 species. 



CJ. depressus Steph.— Oval, slightly oblong, sub-dei)ressed, piceous, elytra 

 indefinitely paler at apex. Antennse testaceous, the club very dark, palpi testa- 

 ceous, the last joint darker. Head punctate, rather closely at the sides and apex. 



