404 TRANSACTIONS OF THE 



the middle, a little sinuated behind, metasternum narrow, 

 whitish, blackish exteriorly, triangularly emarginated 

 each side and on the middle of the posterior margin, 

 middle line incised. Venter clouded with gray and fus- 

 cous. Length from eye to apex of venter 5^-6 millims. ; 

 to tip of hemelytra 6j4-7 mm. Length of cephalic 

 process 2 mm. 



Inhabits neighborhood of St. Louis, Mo. Riley county, 

 Ks. Prof. Popenoe, and coastal plain of Maryland, in 

 June and July. Not common. 



3. S. hesperins, Uhler. Hayden, Bullet, U. S. Geol. 

 Surv. of 1873. Washington, 1878, p. 83. 



More robust than S. sulcipes, with a thicker and rela- 

 tively shorter cephalic process, which is constricted on the 

 immediate tip. The hemelytra are long ovale, not much 

 longer than the body, with the veins thick, pale, and 

 dotted with brown, the tapering, but rounded, tip is 

 occupied by six quadrangular and triangular cells. The 

 anterior femora compressed, sharply carinate, but as wide 

 as in S. sulcipes. 



In one specimen from Texas the cephalic process is as 

 long as the clavus, its upper surface is widely grooved 

 throughout, with only a trace of a carina at base, the 

 middle carina of the pronotum is thick and sharply 

 defined, but obsolete on the mesonotum, and the apical 

 cells of the pronotum are stained brown. 



None of my specimens appears to be maturely colored, 

 and it is possible that all of them may have been bleached 

 by exposure to sunlight. 



4. S. pallidus, New sp. 



A coarse and heavy-looking insect with long, stout legs, 

 oblong figure, tapering whitish hemelytra more or less 

 streaked with fuscous and with a cloud or two of fuscous 



