AMERICAN COLEOPTERA. 45 



of front tibia a little nearer the apex than base. Hind thighs sparsely 

 punctured at middle. Ungual tooth large, obliquely truncate, sub- 

 apical, its tip more than twice as far from the base as from the end of 

 the claw. Length 10-12 mm.; width 5.5-6.9 mm. 



Occurs in the Atlantic Coast region from New Hampshire 

 to Virginia. Specimens at hand bear labels as follows: New 

 Hampshire (Hampton) ; Massachusetts (Dorchester, Chicopee) ; 

 Rhode Island (type) ; New York (Staten Island, Long Island) ; 

 New Jersey (Orange); Washington, D. C; Maryland (Plum- 

 mer's Island) ; Virginia. 



This species occupies in part the same territory as does 

 tristis, and the two species have been frequently mixed in 

 collections. Of the two, tristis is a rather larger species, with 

 shorter prothorax, the angles frequently slightly impressed, 

 mentum with raised line, pygidium without impressed line, 

 punctuation beneath less coarse, ungual tooth a trifle less 

 apical in position. The resemblance of atlantis to belfragei is 

 still more close, but this latter species lacks the transverse 

 series of mental setae, the post-clypeal convexity is obsolete, 

 the pygidium is without impressed line and the ungual tooth 

 is distinctly less apical. 



31. D. sierrse n. sp. 



Rather robust, blackish brown, shining, elytra minutely alutaceous. 

 Mentum declivous in anterior two-fifths, margin of declivity slightly 

 prominent and with row of erect setae. Clypeal margin arcuato-trun- 

 cate with faint median sinuation; front and clypeus densely punctate, 

 the punctures a little less dense on the vertex; post-clypeal convexity 

 rather strong, the broad frontal impressions well marked. Prothorax 

 three-fourths wider than long, widest and rather strongly rounded at 

 middle, sides thence convergent and nearly straight both before and 

 behind, less strongly so posteriorly; punctuation coarser than usual, 

 close at sides, the punctures at middle distant by about their own 

 diameters; surface within the angles not at all impressed; front an- 

 gles not prominent, hind angles obtuse but sharply defined. Elytra 

 coarsely rather densely punctate, the costae moderately well defined; 

 intercostal punctuation confused. Pygidium coarsely closely punc- 

 tate. Metasternum coarsely punctate laterally, numerously but much 

 more finely so at middle. Upper tooth of front tibia midway between 

 base and apex; hind thighs punctate over their entire area; ungual 

 tooth post-median, its apex about two-thirds as far from the tip as 

 from the base of the claw. Length 11-KH mm.; width 6— 7\ mm. 



TRANS. AM. ENT. SOC, XXXV. FEBRUARY, 1909. 



