80 Journal New York Entomological Society. [Vol. vi. 



than wide, the sides feebly convergent and evenly and feebly arcuate from the 

 base, the apex circularly rounded, the surface dull; elytra polished, nearly as in 

 the female; first ventral segment foveate at the centre. Length 2.0-2.2 mm.;. 



width 0.65-0.75 mm. Utah (southwestern) fraterna, sp. nov. 



10 — Body more slender, picious black throughout. Female. — Narrowly elongate- 

 oval, moderately convex, shining ; legs and antennae rufous ; bristles short, pale 

 as usual, arranged in almost regular series on the elytra; front feebly convex; 

 eyes moderate in size; clypeus broadly arcuate, very short before the eyes; pro- 

 thorax nearly one-third wider than long, the sides feebly convergent, evenly and 

 feebly arcuate from base to the rather pronounced apical angles, which are not 

 rounded, the apex circularly arcuate, the punctures fine but deep, moderately 

 close ; elytra two-thirds longer than wide, nearly two and one-half times as long 

 as the prothorax and somewhat wider, the humeral callus minute; series well 

 impressed, almost regular but not much more coarsely punctate, the interval* 

 sparsely punctulate. Length 1.9 mm ; width 0.7 mm. California (Lake Tahoe) 



macilenta, sp. nov. 

 Body stouter and more cylindric, bicolored, the head and prothorax rufous, the elytra 

 black. Female. — Oblong-subcylindric, moderately convex, slightly dull in 

 lustre; bristles short, feeblv subserial on the elytia; head feebly convex, the 

 clypeus broadly arcuato-truncate, oblique at the sides to the eyes, which are 

 s nail ; prothorax fully one third wider than long, nearly as in macilenta, the 

 basal angles more broadly rounded ; elytra scarcely more than one-half longer 

 than wide, but little more than twice as long as the prothorax and not wider,, 

 the impressed lines feeble and somewhat irregular, more coarsely punctured. 

 Length 1.4-1,8 mm,; width 0.55-0.75 mm. California (Calaveras, Humboldt,. 



Lake and Los Angeles Cos. ) versicolor, sp. nov. 



1 1 — Vestiture of the elytra stiff and bristle-like , 12 



Vestiture of the elytra long, slender and hair-like but erect and conspicuous ; elytral 

 punctures arranged without order, not at all seriate at any point ; last joint of the 



maxillary palpi acutely pointed 25. 



12 — Vestiture more or less distinctly serial in arrangement 13 



Vestiture not at all serial at any point, the punctures evenly distributed 15 



13 — Body strongly cylindro-convex, the elytral punctures differing among themselves- 

 in size, the larger forming more or less indefinite series; bristles unusually 



long 14 



Body narrow, parallel, distinctly depressed, the punctuation dense, the elytral punc- 

 tures more uniform in size, the bristles moderate in length, forming close and 



nearly even series. Pennsylvania to Texas creberrima Mell. 



14 — Sides of the prothorax becoming straight and parallel behind the middle, Male. 

 — Body subcylindric, somewhat shining, castaneous in color, the bristles coarse, 

 erect, longer than the width of the scutellum, subserial on the elytra ; head mod- 

 erate, the front flat, the eyes small; clypeal margin feebly reflexed, remotely and 

 feebly bituberculate, a small sinus just without each tubercle and thence strongly 

 obli ]ue for some distance to the eyes ; prothorax nearly as long as wide, circu- 

 larly rounded at apex, narrowly subsinuate at the middle; angles obtuse; base 

 finely margined ; surface very obsoletely, transversely impressed at apex ; punc- 

 tures uneven in size, small, deep, not very close-set; scutellum pointed behind - r 



