99 



lill it occupies the whole width of the elytra, becoming brown toward the 

 tip, while the inner border is yellowish-brown. The wings dusky, the 

 internal half with a yellowish tinge. Legs dark-brown ; liind femora black 

 on the outer and inner surfaces, reddish-brown above, coral-red below, with a 

 white spot near the apex; tip black. Hind tibiae yellow, with black spines; 

 the base and tips black, and a dusky annulation below the knee. 



Dimensions. — $ Length, 1 inch. 9 Length, 1.4 inches; elytra, 1.12 

 inches ; hind femora, 0.72 inch. 



Massachusetts (Scudder). 



S. gracilis, Thos. 



Syn., Arcyptera gracilis, Scudd., Bost. Jour. Nat. Ili.st., 1SG2, VII, 463. 



Vertex of the head as in S. lineata, except that it is more pointed, nar- 

 rower, and more rounded at the tip ; foveolae long and narrow, triangular, and 

 rather deep. Pronotum as in S. lineata. Elytra as in 8. "platyptera, though 

 the costal border is not so much swollen. 



Color. — Dark-brown. Markings of the head and pronotum much as in 

 S. lineata, though not so distinct. The band on the upper border of the 

 sides of the pronotum behind the eye is narrow instead of broad. Elytra 

 uniform dusky -brown. Wings as in *S. lineata. Posterior femora reddish ; 

 tips black. Hind tibiae as in tS. lineata, with the markings rather more 

 distinct. 



Dimensions. — ^ Length, 0.85 inch; elytra, 0.78 inch; hind femora, 0.52 

 inch. 



Maine (Packard); Red River Settlements in British America (Scudder.) 



I am unacquainted with these species, yet I feel waiTanted, from the 

 descriptions alone, in expressing the opinion that this and the following are 

 but varieties of S. lineata. 



S. platyptera, Thos. 



Syn., Arcyptera platyptera, Scudd., Bost. Jour. Nat. Hist., 18G2, VII, 403. 



Vertex of the head much as in S. lineata, with the apex more rounded . 

 and the edge scarcely prominent ; foveolse only discernible as faint depres- 

 sions, slightly longer than in S. lineata. Sides of the pronotum regularly 

 but slightly divergent posteriorly ; median carina more prominent ; pronotum 



