92 



divergent from this point to the front border, more divergent posteriorly; 

 the three are cut by the posterior incision a little behind the middle; 

 posterior extremity obtusely rounded. Elytra and wings narrow, sometimes 

 shorter than, and sometimes passing, the abdomen. Valves of the ovipositor 

 rather longer and more exserted than usual. 



Color. — Head and thorax brown ; a broad, shining black stripe on the 

 side behind the eye, extending to the posterior extremity of the pronotum, 

 along the upper margin, a portion of it extending above the lateral carina at 

 the hind extremity ; sometimes there is a longitudinal dark streak on the top 

 of the head. Antennae yellowish-brown at tlie base, the rest brown or 

 l)lack. Elyti-a uniform pale reddish-brown ; wings pellucid. Hind femora 

 pale-brown or yellowish, except the apex, which is black; hind tibige black 

 at the base, rest pale-red or yellow. Under side dull-yellow. 



Dimensions. — 9 Length, 0.75 to 0.84 inch ; antennre, 0.27 to 0.30 inch; 

 elytra, 0.36 to 0.G6 inch; hind femora, 47 to 0.60 inch. 3 Length, 0.55 to 

 0.65 inch ; antennae, 0.35 to 0.37 inch ; elytra, 0.40 to 0.60 inch ; hind 

 femora, 0.42 to 0.44 inch. 



Maine, Massachusetts, Connecticut, Red River Settlements in British 

 America (Scudder); Southern Illinois, Colorado, Wyoming, Pennsylvania 

 (Thomas). 



I agree v^^ith Mr. Smith (Proc. Port. Soc. Nat. Hist , 1868, 147) in con- 

 sidering St. curlipennis and St. longipennis as varieties of the same species. 



Subdivision 3. — Median carina of the pronotum sub-cristiform; uosterior 

 femora inflated at the base. 



St. ©ccidentalis, Sauss., Rev. et. Mag. Zool., 1861, XIII, 317. 



Very similar to St. mysticus, but a little less, and the body more 

 compressed. Rostrum of the vertex shorter, sub-deflexed ; carina? of the 

 pronotum straight, or nearly so, acute, the median sub-cristiform. Posterior 

 femora inflated, slender only at the apex, passing the abdomen. Antennae 

 filiform. 



Dimensions. — Length, 0.80 inch. 



Tennessee (Saussure). 



A desci'iption of St. mysticus, Sauss., a Mexican species, will be found 

 in the second part of this Synopsis. 



Division 2. — Face sub-vertical ; head sliorl, obtuse. 



