Horn.] 4.JO [Sep.W, 



cence. Antenna? dark piceous or black, tibia? and tarsi black. Length 

 .12-. 16 inch; 3-4 mm. 



The form of the head and the coarser punctuation of the thorax dis- 

 tinguish this species from both those which precede. 



Occurs in the Middle States. 



M. inconspicua n sp. 



Similar in form to olyra but smaller. Head broadly oval. Thorax as 

 broad as long less densely punctured anteriorly. Scutellum small, black. 

 Elytral stria} feebly impressed, punctures moderate, not serrate, intervals 

 flat and finely transversely strigose. Pygidium rufo-piceous, punctato- 

 granulate. Body beneath coarsely but not densely puuctured, abdomen 

 more shining, sparsely and finely punctulate. Length .14 inch ; 3.5 mm. 



Easily known from every other species with dentate claws by the fiat 

 interstices and feebly impressed stria?. The three outer striae are deeper. 



One specimen, Pennsylvania. 



M. pandura Say. Cure. N. A. p. 7; Am. Ent. ed. Lee. I, p. 265; 

 Gyll. Schonh. Gen. Cure. Ill, p. 268. 



Black, opaque. Eostrutn sparsely punctulate and finely alutaceous. 

 Head sparsely punctulate, finely alutaceous and slightly grooved between 

 the eyes. Thorax slightly broader than long, anteriorly rather suddenly 

 narrowed, spine and denticulations nearer the middle than the apex, 

 sides feebly arcuate, base not narrower, hind angles laminiform, covering 

 the entire elytral base, surface sparsely and moderately coarsely punc- 

 tured, intervals opaque, alutaceous. Scutellum black. Elytra moder- 

 ately robust, moderately deeply striate, stria? coarsely punctured, inter- 

 vals feebly convex, finely transversely wrinkled. Pygidium coarsely 

 punctato-granulate. Body beneath black, moderately coarsely punctate, 

 abdomen finely alutaceous, subopaque, sparsely punctate. Legs black. 

 Length .10 inch ; 2-5 mm. 



Differs from all the species by its small size, more robust form, sparsely 

 punctured thorax and the broadly dilated laminiform hind angles of 

 thorax. The thoracic serrate space is nearer the middle than in any 

 species. 



Occurs in Pennsylvania, Georgia, Missouri. 



M. avmicollis Say. Journ. Acad. Ill, 1823, p. 312 ; Boh. Schonh. 

 Gen. Cure. VI r, 2, p. 141. 



Form of olyra. Color pale reddish-brown. Head coarsely and densely 

 punctured. Thorax granulato-punctate, serrations feeble, form sub- 

 quarirate, sides feebly .arcuate not sinuate posteriorly, hind angles 

 scarcely prominent. Elytra deeply striate, stria? very coarsely punc- 

 tured, intervals narrower, feebly convex, granulate at summit. Pygidi- 

 um granulate. Body beneath, legs and antenna? pale reddish-brown, 

 punctured as in barbita. Length .14-. 24 inch ; 3.5-6 mm. 



Occurs with barbita. 



