AMERICAN COLEOPTERA. 261 



moderately convex, at base vaguely impressed, coarsely and densely punc- 

 tured. Elytra with strise of moderately fine submurieate punctures which 

 become finer and more distant toward the tip. Body beneath densely and 

 moderately coarsely punctured, the first ventral as coarsely and denselj^ as 

 the metasternum. Length .08 inch; 2 mm. 



The metas'ternum of the male is slightly flattened, the first ventral 

 vaguely concave, the last ventral simple. 



Occurs in New York, Michigan and Canada. 



M. miicida Lee, Proc. Acad. 1855, p. 305. — Moderately elongate, brownish, 

 opaque, antennse and legs rufous. Head coarsely and densely punctured, not 

 impressed. Thora.x nearly square, sides straight, parallel and subcrenate, 

 anterior angles obtuse, not prominent, disc moderately convex, at apex with 

 scarcely a trace of impression, surface coarsely and moderately densely punc- 

 tured. Elytra with striae of moderate punctures, not closely placed, feebly 

 submurieate at base, finer and more distant at apex. Mesosternum very 

 sparsely and finely punctured and with coarse punctures near the sides in 

 front. Abdomen sparsely punctured, first ventral very distinctly and moder- 

 ately densely punctulate. Length .06 inch; 1.5 mm. 



The metasternum of the male is slightly flattened, the first ventral 

 vaguely concave, the last ventral moderately deeply concave. 

 One specimen, Fort Yuma, California. 



M. texana n. sp. — Moderately elongate, piceous, subopaque, antennas and 

 legs rufous. Head coarsely and densely punctured. Thorax nearly square, 

 anterior angles not prominent, hind angles rectangular moderately prominent, 

 sides straight, parallel, subcrenate, disc moderately convex, posteriorly very 

 vaguely foveate, surface moderately densely and rather coarsely punctured. 

 Elytra rather coarsely and moderately closely submuricately punctured, punc- 

 tures finer and less muricate near the tip. Metasternum nearly smooth at 

 middle, sparsely punctured near the sides. Abdomen nearly smooth, first 

 ventral very sparsely and finely punctulate. Length .06 inch; 1.5 ram. 



The male metasternum is slightly flattened, a median line moder- 

 ately deeply impressed, first ventral merely flattened, last ventral 

 moderately deeply concave. 



Occurs at Waco, Texas, (Belfrage). 



M. longicollis Gyll., Ins. Suecc. p. 635; Aub^, loe. cit. p. 467, pi. 17, 

 fig. 8. — Elongate, ferruginous, slightly shining. Head coarsely but not densely 

 punctured, hind angles distinctly dentiform. Thorax slightly longer than 

 wide and slightly narrower posteriorly, anterior angles obtuse but slightly 

 prominent, hind angles very small, sides very feebly arcuate, margin scarcely 

 crenulate, disc moderately convex, moderately shining, not densely punctate 

 posteriorly distinctly bifoveolate. Elytra with series of small round punctures, 

 not closely placed becoming gradually finer to tip, intervals distinctly alutace- 

 ous. Body beneath sparsely punctulate, metasternum at middle nearly smooth, 

 abdomen very sparsely and finely punctulate. Length .06 inch ; 1.5 mm. 



Three 9 specimens from District of Columbia, diff"ering from all 

 our other species by the comparatively smooth and shining thorax. 



