146 FAMILY V. — PENTATOMIDvE. 



when three individuals were taken from the bole of a beech tree 

 in a dense woodland near Indianapolis. It probably hibernates 

 as imago as a single example was taken Oct. 17 from be- 

 neath a half buried log. The broad depressed form, with sides 

 almost parallel from apex of pronotum to behind middle of ab- 

 domen ; the wide, deeply inserted head, and broad flattened side 

 margin of pronotum give this bug a peculiar appearance which 

 makes its recognition easy. 



While the known range of M. insert us extends from New 

 England and Ontario west to Nebraska and Kansas and south- 

 west to Arizona and California, it has not previously been re- 

 corded south of New Jersey and Arkansas. Brimley (Ms.) re- 

 ports it as having been taken at Raleigh, N. Car., Oct. 1, 1917. 

 Hart (1919, 189) mentions it as occurring at a number of sta- 

 tions in Illinois from March to November, and adds: "Its in- 

 frequency in collections is doubtless due to its arboreal habits. 

 Van Duzee records its capture in numbers from small hickory 

 trees; and in late October and early November we found it 

 very abundant on sidewalks on the campus of the University 

 of Illinois under a row of hard maple trees which it was pre- 

 sumably leaving for hibernation." 



XII. C(ENUS Dallas, 1851, 230. 



Oval, convex species of medium size having the head porrect, 

 longer than wide, tapering in front, its apex rounded ; tylus as 

 long as cheeks, strongly convex and elevated above their plane ; 

 antennae slender, basal joint shortest, second three-fourths the 

 length of third, the latter longer than fourth, fifth longest; 

 beak reaching middle of hind coxse, its second joint longer than 

 third and fourth united ; pronotum with front portion feebly 

 declivent, its apex deeply emarginate, side margins straight, 

 humeral angles rounded ; scutellum broad, its apical third wider 

 than and slightly surpassing the corium, its tip broadly 

 rounded ; corium with apex subtruncate, its angles rounded ; 

 membrane reaching tip of abdomen, its veins anastomosing; 

 connexivum not exposed ; osteolar opening with a very short 

 auricle; tarsi sulcate above. Genital plate of male with apex 

 broadly emarginate, the notch with a distinct median tooth. 

 But one species is known. 



