1890] 



MARYLAND ACADEMY OF SCIENCES. 85 



Only two specimens, both females, have been examined. The 

 one from near Chicago, collected by Mr. Bolter, is macropter- 

 ous and has the wing covers much longer than the body, with 

 the membrane developed. The other from Mr. C. W. Strom- 

 berg, Galesburg, 111., is brachopterous, but has the wing covers 

 a little longer than the abdomen, and bluntly rounded. 



2. M. gracilis. New sp. 



Narrower than the preceding species, the thorax not wider 

 behind than the swollen middle. Black, polished, apparently 

 quite bald. Head almost spherical, the tylus moderately promi- 

 nent, broad and convex, sharply defined ; antennae very slender, 

 longer than the body and wing covers in the brachopterous 

 form, fulvo-testaceous, infuscated at tip, the fourth joint long, 

 much longer than the basal one, but shorter than the third and 

 equally slender, the second joint not as long as last two united, 

 the basal joint stout, feebly curved, longer than the head, con- 

 tracted and black at base ; eyes prominent, dark brown ; ros- 

 trum testaceous, piceous at base and tip, reaching to the middle 

 coxae in the females. Thorax subcylindrical, with a depressed 

 collum in front, followed behind by a swollen lobe, which causes 

 the middle to be as wide as the more flat, almost rectangular 

 base, the posterior margin a little curved upwards ; legs long, 

 fulvous, infuscated at tip of tarsi, the coxae and acetabulae pale 

 yellow. Scutellum convex, dull black, acute at tip. Hemelytra 

 coriaceous, shining black, with a long deep yellow spot at base 

 which is continued, paler, narrowly along the costal margin to 

 the tip, which is covered by a broad white spot. Abdomen 

 black, highly polished, a little widened behind. 



Length to end of abdomen, 4-4| millims ; width of prono- 

 tum, I millim; width near apex of venter. If millims. 



One specimen from Wisconsin, sent to me by Mr. Bolter, and 

 a series of both sexes from Buffalo, N. Y., and Muskoka, Ont., 

 kindly given to me by Mr. Van Duzee. 



