4i8 Memoirs on the Coleoptera 



There may be some doubt if all representatives of semiruber are 

 as pale rufous in color as the type, but I have noted that throughout 

 Odontocorynus, wherever species are represented by good series, 

 there is no decided variation in color to be observed. 



The following table embraces all the species of the salehrosus 

 type that have come to me so far: 



Elytra with more or less dense, pale and very conspicuous parallel-sided 

 scales. Rocky Mountain regions, excepting inspectus and boonei, 

 having nude strial punctures and which occur east of the Mississippi 

 River 2 



Elytra and pronotum with separated linear scales, which are so numerous 

 however as to render the vestiture conspicuous; strial punctures 

 each with a distinct slender white squamule 8 



Elytra and pronotum more remotely clothed with small, sparse, slender 

 and inconspicuous squamules; strial punctures never squami- 

 ferous 9 



2 — Strial punctures each with a conspicuous squamule; body very 

 stout; first funicular joint notably elongate 3 



Strial punctures each with a very minute, slender and barely discoverable 

 squamule; body less stout; first funicular joint evidently shorter. .4 



Strial punctures without apparent squamules; first funicular joint some- 

 what diversified in length according to the species 7 



3 — Body stout, oblong-suboval, not shining, black, the legs and antennae 

 black throughout; upper surface clothed densely with rather large 

 white scales, intermingled with some that are darker on the elytra, 

 the under surface, as usual, with dense oval white scales; beak in 

 the female smooth, cylindric, only feebly tapering, nearly straight, 

 bent at base, about half as long as the body, the antennae inserted 

 barely visibly beyond the middle, the funicular joints with coronaei 

 of white squamules; prothorax four-sevenths wider than long, the 

 sides subevenly and strongly arcuate, becoming parallel basally, 

 the apex faintly constricted; basal lobe a fourth the total width; 

 punctures moderately coarse and very dense, with a smooth median 

 line centrally; elytra broadly, obtusely parabolic, a fourth longer 

 than wide, at the moderately prominent humeri but very slightly 

 wider than the prothorax, four-fifths longer; striae not very coarse, 

 the intervals broad, subequal, not very coarsely, confusedly punc- 

 tate. Length (9) 5.0 mm.; width 2.35 mm. Eastern Colorado. 



coloradensis n. sp. 



Body less stout, black, less obtuse behind, clothed very densely through- 

 out above with large yellowish-white scales, still larger, denser and 

 whiter beneath, the squamules of the strial punctures very distinct, 

 the interstitial scales of perfectly uniform tint; beak in the female 

 smooth, feebly arcuate, slightly tapering, bent at base and not quite 

 half as long as the body, the antennae nearly similar, the funicle 

 slightly longer; prothorax of nearly similar outline, except that the 

 arcuate sides become parallel only much nearer the base, the basal 



