H. C. FALL. 29 



Easily separable from lecontei by the small size, somewhat 

 narrower form, more convex thorax, which is less narrowed 

 anteriorly, short second funicular joint and more strongly 

 impressed elytral striae, with narrower more convex inter- 

 vals. The smooth median prothoracic line is very rarely 

 entirely lacking in lecontei. 



M. austera n. sp. — Dull black, elytra rarely with faintest suspicion 

 of blue, prothorax wider than long, apical constriction strong, surface 

 densely punctate, without or with but slight trace of short median 

 smooth line; elytra parallel or nearly so in the c?, a little widened 

 behind in the 9 ; striae of coarse oblong punctures, scarcely or feebly 

 impressed, intervals nearly flat with single lines of rather coarse inter- 

 stitial punctures ; femoral tooth small but acute. Length 3-4 mm. 



The type of this species is a 6^ from Ridgeway, Ontario, 

 sent me many years ago by Mr. A. H. Kilman. Other ex- 

 amples before me are from " Canada;" Maine (Monmouth — 

 Frost); New Hampshire (Farmington); Massachusetts (Con- 

 cord and Framingham); Michigan (Marquette, Detroit, Port 

 Huron); North Carolina (Retreat); New York; Ontario 

 (Toronto). 



The small size, dull black or nearly black color, with rela- 

 tively rougher surface sculpture, and more parallel elytra 

 separate this species from typical lecontei easily enough. 



The following form in typical specimens differs so much 

 from typical anstera as to present the appearance of a distinct 

 species, which, indeed, I at first supposed it to be. With in- 

 creased material intermediate forms turned up, and with 

 present light I can give it varietal standing only. 



M. anstera var. substrig'a n. var.— Black, elytra dark blue or 

 greenish, moderately shining, evidently but not strongly widened 

 posteriorly. Prothorax closely punctate, the punctures becoming more 

 elongate toward the middle, where they are more or less conspicuously 

 longitudinally confluent. Second funicular joint less than twice as 

 long as wide and shorter than the two following united ; elytral striae 

 evidently impressed, but with the intervals nearly flat, and with single 

 series of moderately coarse interstitial punctures. Length 3.2-4 mm. 



Massachusetts (Tyngsboro — type, cf, Dover, Brookline); 

 New York (Peekskill). 



The strigose or substrigose prothorax primarily separates 



TRANS. AM. ENT. SOC. , XXXIX. 



