Coleopterological Notices, IV. 379 



sutural notch almost obsolete ; strial punctures coarse, deep and 

 close-set. Abdomen rather coarsely and closely punctate. Length 

 3.7 mm. ; width 1.4 mm. 



Lake Superior and Minnesota. Resembles rufulus somewhat, 

 but differs in its narrower form, more strongly convergent sides of 

 the prothorax toward apex, the latter being very much narrower 

 when compared with the base, in its decidedly coarser punctuation, 

 especially of the pronotum, and in the coarser, denser vestiture. 

 The two specimens before me are apparently males, and the one 

 from Minnesota is pale flavo-testaceous throughout, probably from 

 immaturity, with the frontal fovea practically obsolete, this not 

 being so constant a feature as it apparently is in indifferens. 



23 D. silbsignatlis Mann.— Bull. Mosc, 1853, II, p. 241 (Erirhinus). 



Rather slender, convex, feebly subcuneate ; body piceous-black, 

 the pronotum rufescent toward base and apex, the elytra dark rufo- 

 testaceous, each indefinitely clouded with blackish in the middle to- 

 ward base and also near the apex ; legs and antennae pale, the club 

 of the latter dark. Head and beak finely deeply and extremely 

 densely punctate, dull, the beak finely, obsoletely carinulate, rather 

 stout, almost straight and scarcely longer than the prothorax, the 

 antennae inserted at fully apical third in the male, the basal joint of 

 the funicle not longer than the next two, second not as long as the 

 third and fourth combined. Prothorax nearly one-half wider than 

 long, rather wider and very strongly rounded before apical third, 

 the sides thence strongly convergent and scarcely visibly constricted 

 to the apex ; disk finely, very densely punctate, with a narrow 

 partial impunctate line. Elytra at base very slightly wider than 

 the disk of the prothorax, nearly four times as long as the latter, 

 just visibly widest behind the middle, gradually rounded in apical 

 two-fifths, the apex narrowly obtuse ; striae rather distinctly im- 

 pressed, not very coarsely but deeply and closely punctate; intervals 

 minutely, rather densely and subrugosely punctate. Abdomen 

 finely, densely punctate. Femoral teeth all large and prominent. 

 Length 3.2 mm. ; width 1.3 mm. 



Alaska. Cab. LeConte. This species somewhat resembles luri- 

 dus, but is much narrower and is easily recognizable by the excep- 

 tionally fine and dense punctuation, especially of the anterior portion 

 of the body. 



Annals N. Y. Acad. Sci., VI, Aug. 1892—26 



