82 Journal New York Entomological Society. [Vol vr. 



coarse but feebly impressed and quite sparse. Length 2.1 mm.; width I.omm, 

 Louisiana congests, sp. nov. 



20 — Male. — Cylindric-oval, not very stout, strongly convex, pale in color probably 

 from immaturity, rufo-testaceous, shining ; bristles very stout but short, distinct 

 and rather close on the prothorax, somewhat sparse on the elytra ; head and 

 eyes rather well developed, the front flat ; clypeus strongly reflexed, triangularly 

 bidentate ; prothorax two-fifths wider than long, the sides rather strongly con- 

 vergent and arcuate from base to apex, the latter reflexed and triangularly bi- 

 dentate; base truncate; punctures quite coarse, deep and close-set; elytra less 

 than one-half longer than wide, four-fifths longer than the prothorax, the punc- 

 tures about equal in size to those of the pronotum but sparser. Length 1.4 

 mm. ; width o. 6 mm. California duplex, sp. nov. 



21 — Prosternum normally convex ; anterior tibia- externally everted and acute at 

 apex; scutellum small, not wider than long; prothorax rounded at the apex;; 

 male with the first ventral simple. Male. — Body narrowly cylindric-oval, 

 moderately convex, piceous-black, with the legs and antenna? pale ; surface 

 shining; bristles coarse, pale, erect, moderately sparse, even in length on the- 

 elytra ; head and eyes small ; clypeal margin feebly reflexed, bituberculale ; pro- 

 thorax nearly as long as wide, parabolically rounded anteriorly, with a small and 

 very feeble median sinuation, the sides becoming straight and parallel toward 

 base ; punctures fine but perforate, rather close-set ; elytra rather more than one- 

 half longer than wide, as wide as the prothorax and twice as long, the punc- 

 tures rather coarse, well separated and subeven in size. Length 2.0 mm. ;. 

 width 0.7 mm. California ( Lake Tahoe) hystricula, sp. nov. 



Prosternum broadly and feebly biconcave ; anterior tibia? thickened and rounded ex~ 

 ternally at apex ; scutellum larger ; prothorax feebly sinuate from above at the 

 converging sides of the apex ; maxillary palpi with the last joint more acutely 

 pointed ; male with the first ventral foveate at the middle 22 



22 — Eyes small, the body more elongate and cylindric 23 



Eyes large and well developed ; body stouter and more cylindric-oval 24 



23 — Antennal funicle longer than the club. Male. — Moderately convex and shining, 

 rather pale castaneous, the bristles stiff, moderately long and rather abundant ; 

 head rather well developed, the clypeal tubercles small and separated by a fourth 

 of the entire width ; prothorax nearly a fourth wider than long, rounded and some- 

 what lobed at apex, the sides becoming nearly straight and parallel toward 

 base; punctures rather strong and close set though not very coarse ; elytra one- 

 half longer than wide, as wide as the prothorax and rather more than twice as- 

 long, the punctures quite coarse, impressed and somewhat close-set. Length 

 1. 75-1. 8 mm. ; width 0.75 mm. Montana (Missoula) montana, sp. nov. 



Antennal funicle equal in length to the club. Male. — Dark rufo-piceous, the elytra 

 black, the legs and antenna? pale, shining, the bristles stiff, erect and pale but 

 rather sparse throughout; head well developed, the minute tubercles of 

 the clypeus separated by a little more than a fourth of the width ; prothorax 

 nearly as in montana but nearly a third wider than long, with the punctures 

 much less close-set ; elytra one-half longer than wide, as wide as the prothorax 

 and rather more than twice as long, the punctures moderately coarse, deep and 



