164 Memoirs on the Coleoptera 



and relatively even smaller in size. All these comparisons are 

 taken from the male. 



Callisthenes Fisch. 

 The species of this genus are numerous, but have been greatly 

 confused in the scanty literature concerning them. The species 

 of the pimelioides group are distinguished from those of the luxatus 

 group, by having the sculpture stronger and denser on the anterior 

 parts and more granuliform on the elytra; they may be separated 

 readily, so far as known to me, as follows: 



Elytra with the rows of teguliform elevations separated by definite and 

 rather deep striae 2 



Elytra with the tegulee in regular series, which are not separated by 

 definite striae 4 



2 — Sides of the elytra rather widely and strongly reflexed basally. Small, 

 oblong-suboval, rather convex, black, somewhat shining but without 

 metallic lustre of any kind; head three-fifths as wide as the pro- 

 thorax, with rather small, moderately prominent eyes; surface with 

 sparse vermiculate creases, more numerous laterally and basally 

 and mingled with a few remote minute punctures; epistoma with 

 broad flat apical beading, the lateral excavations deep; mandibles 

 semicircular externally, much produced inwardly at tip; antennae 

 as long as the head and prothorax, the pubescent triangular flat 

 area on each joint well developed; prothorax three-fourths wider 

 than long, widest anteriorly but with the sides broadly and feebly 

 arcuate throughout and but slightly oblique behind, sharply and 

 strongly, subevenly reflexed; basal angles well produced posteriorly 

 and unusually narrowly rounded; surface finely, not closely punc- 

 tate, more coarsely and closely rugose peripherally, the sculpture 

 becoming especially coarse and dense in the foveae, the deepest part 

 of which is small, rounded and distant from the sides; apical beading 

 broad and thick; stria fine; elytra short, oblong, parallel, with 

 evenly arcuate sides and broadly obtuse apex, barely a fourth longer 

 than wide, not quite one-half wider than the prothorax; tegulae 

 mutually contiguous and subevenly and moderately convex, sub- 

 asperately prominent at the middle of their hind margins and, 

 toward the sides and apex, becoming very close and coarsely grani- 

 form; anterior male tarsi narrowly dilated; tarsi short. Length 

 (cf ) 14.3 mm., width 6.8 mm. Northern Rocky Mountain region. 



reflexus n. sp. 



Sides of the elytra similarly rather widely reflexed basally, the sculpture 

 and striation very different. Body short, convex, shining, deep 

 black; head moderate, four-sevenths as wide as the prothorax, with 

 only moderately prominent eyes; surface remotely biimpressed 

 anteriorly, finely, sparsely punctate and with some fine irregular 

 impressed lines; epistoma not impressed at apex, the lateral sulci 



