ClCINDELID/E AND CARABID.E 157 



pressed as in opaculus. Length (c?) 6.6 mm.; width 2.5 mm. 



Missouri (St. Louis) alutaceus n. sp. 



Elytra more densely dull, not shining 5 



5 Color paler, apparently castaneous-brown when mature, the margins, 

 legs and antennae pale as usual. Body rather larger and stouter 

 than in opaculus, the head and prothorax relatively a little larger 

 but otherwise similar; elytra of the usual form, between a fourth and 

 fifth wider than the prothorax and widest at the middle, very finely 

 striate, the rhombiform micro-reticulations fully as fine as in opaculus 

 or even finer but much more feeble, with their facets nearly flat and 

 not convex; epipleura flatter basally but similarly wider at basal 

 fourth than at base. Length ( 9 ) 9.0-10.0 mm.; width 3.6-3.8 mm. 

 North Carolina (Asheville) and New Jersey. Four examples. 



appalachius n. sp. 



Color black, with the usual paler side margins, legs and antennae 6 



6 Rather slender, the male and female of nearly the same size and out- 

 line, both very elongate-oval and rather narrow; head very little 

 more than half as wide as the prothorax, the latter as long as wide, 

 the apex about three-fourths as wide as the base; elytra oblong-oval, 

 nearly a fourth wider than the prothorax, with very fine striae; 

 hind tarsi fully as long as the tibiae. Length (cf 9 ) 8.0-9.5 mm.; 

 width 3.0-3.7 mm. Rhode Island to Texas (Austin) . .opaculus Lee. 

 Stouter than opaculus, the female very much stouter and with oval 

 inflated elytra, similar in coloration and nearly similar in the opacity 

 and micro-reticulation of the elytra; head a little larger; prothorax 

 of similar form; elytra a third to two-fifths wider than the prothorax 

 (9), but nearly as in opaculus (cf), the male being notably more 

 slender than the female; antennae and tarsi somewhat longer than in 

 opaculus. Length (d 71 9 ) 9.3-10.3 mm.; width 3.2-4.1 mm. Kansas 



(Mt. Hope), Texas and Mississippi (Vicksburg) obesulus n. sp. 



7 Elytral intervals broadly and feebly though evidently convex. . . .8 



Elytral intervals flat 9 



8 Form very elongate-oval, rather convex, strongly shining, black, the 

 side margins not distinctly pale, except those of the prothorax toward 

 base; head rather small; prothorax large, rather convex, almost as 

 wide as the elytra, as long as wide, formed nearly as in gregarius, 

 except that the side margin is feebly reflexed or deplanate only 

 toward base, rather broadly so at the hind angles; elytra elongate- 

 oval, shining, with fine strise, the setigerous punctures of the third 

 stria anteriorly, as usual shifting to the second posteriorly, three or 

 four in number; coarse punctures of the outermost stria strong and 

 equal from base to apex, widely separated; basal joint of the hind 

 tarsi rather short, not quite as long as the next two combined. 

 Length (cf 9 ) 7.4-9.0 mm.; width 2.8-3.4 mnl - Colorado (Boulder 



Co.) coloradensis n. sp. 



Form narrower, the size smaller, rather convex, almost similar in color- 

 ation, the prothorax relatively smaller, the head larger, the former 

 as long as wide, with rather less rounded sides and scarcely more than 

 three-fourths as wide as the elytra, which are more oblong-oval, 

 with broadly and evenly arcuate sides, less elongate and more ob- 



