656 Coleopterological Notices, VI. 



straight from near the base ; disk closely' and strongly punctate, 

 the interspaces feebly rugose but polished, opaque and strongly 

 rugose in lateral fourth. Elytra three-fourths longer than wide, 

 parallel and straight at the sides, slightly wider than the pro- 

 thorax, rather more finely punctate than in canescens, the punc- 

 tures moderately sparse. Length 2.5-3.0 mm.; width 0.8-1.2 mm. 



California (Sta. Clara and Napa Cos.). The female is de- 

 cidedly stouter than the male above outlined, with the head 

 smaller and the elytra shorter and broader; the fifth ventral of the 

 male is short though distinctlj' longer than the fourth, and is 

 transversely truncate at apex, the surface even and unmodified ; 

 the genital segment is broadl}^ sinuate at apex, with a narrow 

 median canaliculation, and the dorsal pj^gidium is visible at apex. 

 In the female the fifth ventral is longer, rounded, with the surface 

 deflexed at apex and apparently somewhat impressed. This 

 species is represented in my cabinet by a large series. 



I have before me three specimens from Truckee, in the Sierras, 

 which are almost undistinguishable from the typical forms of 

 difficilis, but which have the fifth ventral of the male broadl}' 

 and feebly sinuate at apex ; they apparently' represent a closely 

 allied species or subspecies. 



19. I,, lidelis n. sp. — Narrow, elongate, convex, polished, with a grayish- 

 seneous histre ; legs black, the tibise except toward base and tarsi ruf o-piceous ; 

 autenn?e piceous-black, the second joint piceo-testaceoiis, the basal joint large 

 black and cinereo-pubesceut; pubescence lontr, coarse and dense on the prono- 

 tum, less dense on the elytra. Head four-fifths as wide as the prothorax, the 

 eyes rather large and prominent, the facets mutually adjacent; surface densely 

 punctate, feebly rugose toward the sides, the anterior impressions feeble; epi- 

 stoma reetilinearly truncate and black throughout; anteuuie rather long and 

 slender, one-half longer than the prothorax, the fifth joint much longer and 

 wider than the fourth or sixth, tritingular, tenth distinctly longer than wide. 

 P/o//io/-rt.f scarcely one-half wider than long; sides broadly rounded toward 

 base, rather strongly convergent and becoming almost straight thence to the 

 broadly obtuse and rounded apical angles; apex feebly arcuate, wider than the 

 feebly pedunculiform part of the base; disk rather finely and closely perforato- 

 punetate, becoming rugose in much less than lateral fourtli. Elytra elongate, 

 four-fifths longer than wide, slightly wider than the prothorax, subparallel, 

 scarcely visibly dilated posteriorly, the apex evenly parabolic; punctures 

 somewhat coarse, deep and close-set. Legs moderately stout, the hind tarsi 

 slender and slightly shorter than the tibise. Length 2.75 mm. ; width 0.85 mm. 



California. 



The single male before me has the fifth ventral transversely and 



