490 Goleopterological Notices, VI. 



fine, cinereous and sparse. HeoiJ scarcely tliree-fifths as wide as the prothorax 

 rather finely but strongly, densely punctate, subini punctate in the middle 

 anteriorly, the impressions large and deep ; apex of the epistoma thin and cori- 

 aceous; labrum short, pale, broadly arcijato-truncate at apex; mandibles and 

 palpi pale, dark toAvard apex; eyes not very prominent; antenna^ slender, the 

 fifth and seventh joints strongly dilated, tenth Avider than long. Prothorax 

 fully three-fourths wider than long, widest at basal third; sides strongly con- 

 vergent anteriorly, becoming parallel and broadly rounded toward base; apex 

 arcuato-truneate, much narrower than the base, which is more strongly arcu- 

 ate ; disk finely, unevenly and densely punctate, becoming coarsely reto-scab- 

 rous near the sides; lateral margins finely subserrulate toward base, the cilia 

 rather long. Elylra one-half longer than wide, widest at posterior third, 

 where they are nearly two-fifths wider than the prothorax ; sides arcuate, be- 

 coming parallel for a short distance at base; apex very broadly rounded; punc- 

 tures fine, feeble and sparse, the interspaces obsoletely reticulate. Abdomen 

 finely but strongly and densely punctulate, finely, rather thinly pubescent, 

 the legs short. Length 2.o mm. ; width 1.1 mm. 



Arizona (near the Grand Canon of the Colorado). Dr. T. 

 Mitchell Prudden. 



The single type is a female, and the species makes a remarkable 

 approach to Listrus in general organization, bnt the anterior tibiae 

 have two well developed external series of stiff erect spines. The 

 fifth ventral is broadly and ver}^ evenly rounded at apex. 



25. T. erytliropus Lee— Proc. Acad. Nat. Sci., Phila., VI., p. 170 

 (Dasytes); 1. c. 1866, p. 353 ( Pristoscelis ) . 



Oblong-oval, moderately convex, black, dull, the elytra only 

 feebly shining; legs pale rufous, the tibiae and tarsi blackish; an- 

 tennae testaceous, only slightly obscure toward apex, the basal 

 joint blackish ; palpi and labrum piceous-black; pubescence ver}^ 

 coarse on the elytra, moderatel}^ long and somewhat dense, cin- 

 ereous. Head two-thirds as wide as the prothorax, finely, densely 

 punctate, the impressions rather feeble ; e3'es moderatel3^ large 

 and somewhat prominent ; epistoma somewhat pale and coria- 

 ceous ; antennae short, scarcely longer than the prothorax, the 

 three outer joints rather strongl}' dilated, the tenth strongly 

 transverse. Prothorax three-fifths wider than long, the sides 

 sensibly convergent from base to apex, feebly and almost evenl}^ 

 arcuate, the basal angles ver}^ broadl3' obtuse and rounded ; disk 

 opaque, finely, unevenly and very denseh' but not profoundly- 

 punctate, only slightl}' more scabrous toward the sides ; marginal 

 cilia short, dense and evenly recurved. Elytra nearly three-fifths 



