490 Goleoi^terological Notices, VI. 



fine, cinereous and sparse. Hcr((1 scarcely three-fiftlis as wide as the protliorax 

 rather finely l)tit stronjily, densely punctate, subinijiunctate in the middle 

 anteriorly, the impressions larji'e and deep; apex of the epistoma thin and cori- 

 aceous; la])rum short, ])ale, hroadly arcuato-truncate at apex; mandibles and 

 paljti pale, dark toward apex; eyes not very prominent; antennic slender, the 

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

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

 vergent anteriorly, becoming parallel and broadly roirnded toward l)ase; apex 

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

 ate; disk finely, unevenly and densely ])unctiite, becoming coarsely reto-scab- 

 rous near the sides; lateral margins finely subserrulate toward 1)ase, the cilia 

 rather long. Eli/fra 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; i)unc- 

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

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

 the legs short. Length 2.3 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, but the anterior tibia* 

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

 fifth ventral is broadly and very evenly rounded at apex. 



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

 (Dasytes); 1. c. IsOfi, p. 853 ( Pristoscelis). 



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

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

 tenntfi testaceous, only slightly obscure toward apex, the basal 

 joint blackish ; palpi and labrum piceous-black; pubescence very 

 coarse on the elytra, moderately long and somewhat dense, cin- 

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

 punctate, the impressions rather feeble ; eyes moderately large 

 and somewhat prominent ; epistoma somewhat i)ale and coria- 

 ceous ; antenme short, scarce!}' longer than the prothorax. the 

 three outer joints rather strongly dilated, the tenth strongly 

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

 sensibl}^ convergent from base to apex, feebly and almost evenly 

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

 opaque, finely, unevenly and very densely but not profoundly 

 punctate, onl^' slightly more scabrous toward the sides ; marginal 

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



