328 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



percurrent lateral cariuae, into the vertical lateral lobes; median carina 

 low but distinct, percurrent, equal; front margin faintly convex, hind 

 margin sub truncate, mesially distinctly but weakly emarginate; pro- 

 zona sparsely and shallowly punctate, distinctly longitudinal in both 

 sexes, nearly twice as long as the finely and densely punctate metazona. 

 Prostemal spine large, conical, blunt, suberect; interspace between 

 mesosternal lobes twice as long as broad (male) or quadrate (female). 

 Tegmina abbreviate, about the length of the prozona, lateral, lanceo- 

 late, the costal margin convex, the inner nearly straight, fully three 

 times as long as broad, apically subacuminate, brownish fuscous. Fore 

 and middle femora considerably tumid in the male; hind femora very 

 slender, green, the whole geniculation blackish fuscous, the under sur- 

 face flavous; hind tibiae green, with a basal, feeble, fuscous annulus, 

 the spines black in the apical half, eleven to twelve in number in the 

 outer series. Abdomen ferrugiueo-fuscous, flavescent beneath, com- 

 pressed, with a distinct median carina, the extremity of the male 

 abdomen considerably clavate, much recurved, the supraanal plate short 

 triangular with subrectangulate apex, nearly plane surface, and a 

 not very deep percurrent median sulcus between low and rounded 

 walls; furcula reduced to a pair of hardly noticeable approximate 

 rounded lobules; cerci long clepsydral, moderately broad at extreme 

 base, tapering regularly in the basal half so that the middle is less 

 than half as broad as the base, beyond enlarging to a subspatulate 

 compressed tip, angulate and faintly produced at the lower posterior 

 extremity, the whole straight except for a faint incurving, and as long 

 as the supraanal plate; subgenital plate small, narrowing apically so 

 as to be hardly more than half as wide apically as at base, the lateral 

 and apical margins in the same plane, well rounded as seen from above, 

 entire. 



Length of body, male, 14 mm., female, 19 mm.; antennae, male, 8.5 

 mm., female, 7.75 mm.; tegmina, male, 3 mm., female, 4 mm.; hind 

 femora, male, 10 mm., female, 11.25 mm. 



Twenty-nine males, 39 females. Denison, Crawford County, Iowa, 

 July 20, J. A. Allen; Dallas County, Iowa, August 8-10, September 

 1-3, J. A. Allen; Nebraska, Dodge; Omaha, Douglas County, 

 Nebraska (U.S.N.M. Eiley collection; L. Bruuer); St. Louis, Mis- 

 souri, July, October 27 (U.S.N.M. Riley collection); Vigo, Putnam 

 and Fulton counties, Indiana (W. S. Blatchley: A. P. Morse). 



It has also been reported from Dakota (Bruner), Illinois Rock 

 Island, McLean and Champlain counties (Thomas, McNeill), and Ken- 

 tucky Webster and Fayette counties (Garman). 



This is a sylvan species. Allen found it " abundant in grassy 

 groves" in Iowa, Blatchley finds it in Indiana "on the iron weeds 

 (Vernonia fasciculata) which grow abundantly in low open "woods," and 

 McNeill speaks of it in Illinois as a wood-loving species. It may be 

 found full grown from the first of July to the middle of November. 



