82 MEMOIRS ON THE COLEOPTERA 



legs and tarsi nearly as in compar; abdomen similarly finely punctured 

 medially at base, the metasternal punctures also almost similar. 

 Length (cf) 14.0 mm.; width 4.9 mm. Pennsylvania (near Phila- 

 delphia) liobasis Chd. 



9 Elytra rather long, as in the two preceding species; body subparallel, 

 moderately convex, shining (cf ), piceous-black, the under surface 

 gradually rufescent posteriorly; legs and other appendages pale 

 testaceous; head large, nearly three-fourths as wide as the prothorax, 

 the eyes a little larger but scarcely so prominent as in compar, the 

 antennae nearly similar, the epistomal setae strikingly long; prothorax 

 more than two-fifths wider than long, more depressed than in 

 compar and broader, scarcely at all narrower than the elytra, the 

 sides parallel and arcuate, more converging basally, the base equal 

 in width to the apex and not broader as in compar; all other char- 

 acters nearly as in that species; elytra fully two-thirds longer than 

 wide, longer and relatively narrower than in compar ^ut otherwise 

 nearly similar, except that there are some distinct punctures toward 

 base of intervals five to eight, not apparent in that species, the 

 marginal interval similarly opaque; basal joint of the hind tarsi but 

 little longer than the fifth, the tarsi not very slender. Length (cf ) 

 15.0 mm.; width 5.5 mm. Two examples, one from Summit, 

 Illinois, and the other without label in the Levette cabinet, probably 

 from Indiana pubitarsis n. sp. 



Elytra shorter than in any of the preceding species, a little less than one- 

 half longer than wide, black or piceous-black, the entire under surface 

 obscure rufous, the legs testaceous; upper surface rather convex, 

 shining, the elytra (9 ) subopaque; head notably large, three-fourths 

 as wide as the prothorax, the eyes prominent as usual but relatively 

 moderate in size, the epistomal setae moderate; antennae extending 

 to the thoracic base; prothorax relatively not so large as in compar, 

 two-fifths wider than long, much narrower than the elytra, throughout 

 nearly as in pubitarsis, the base not distinctly wider than the apex; 

 elytra fully two-fifths wider than the prothorax, the striae rather 

 deeply impressed even in the female, and with distinctly convex 

 intervals, the scutellar stria moderately long; intervals five to eight 

 with a few punctures, only very near base on the former, increasing 

 to a loose irregular series through two-fifths on the latter; legs 

 rather slender, the hind tarsi more slender and less conspicuously 

 pubescent above than in pubitarsis, the basal joint very much longer 

 than the fifth. Length (9) 15.0 mm.; width 5.6 mm. Arizona. 

 A second example from the same locality is smaller, relatively much 

 narrower, with the prothorax about as wide as the elytra, with very 

 long scutellar stria and with the punctures basally on the elytra 

 nearly obsolete. Length (9) 12.8 mm.; width 4.7 mm. 



nactus n. sp. 



10 Body large, stout and convex, deep black and strongly shining, the 

 elytra ( 9 ) only a little less so and with the micro-reticulation indis- 

 tinct except near the sides; under surface blackish-piceous, the legs 

 rufous; head actually but not relatively very large, only about 

 three-fifths as wide as the prothorax, the epistomal suture unusually 



