Horn.] -Lo^ [Nov. 5, 



S. iripennis Say. Thorax broader than long, very distinctly narrowed 

 posteriorly, hind angles distinct but obtuse, margin narrow and slightly 

 translucent, disc smooth with few fine punctures in the vague basal im- 

 pressions. Elytra broader than the thorax, sides feebly arcuate, apex 

 scarcely sinuate, surface striate, striae obsoletely finely punctulate, intervals 

 flat, very obsoletely finely punctulate, the marginal usually distinctly punc- 

 tulate. Legs testaceous. Length .26 inch ; 6.5 mm. 



The narrowing of the thorax behind in this species is quite well marked, 

 so that it resembles in form certain Bradycellus. 



Occurs from Illinois to Georgia and Texas. 



In the synoptic table given by Putzeys, opalinus and gagtinus are placed 

 in a series in which the thorax is said to be "narrowed behind without 

 prominent angles," while in the description the former is said to have a 

 square thorax equally narrowed at apex and base, while the latter is said 

 to be narrowed in front. They are also widely separated in the body of 

 his paper with thirty-one species between. 



S. subtinctus Lee. Closely resembles iripennis, but the thorax is more 

 narrowed posteriorlj'- and the hind angles sharply rectangular and slightly 

 prominent. The outer elytral interval is very narrow and smooth. Legs 

 pale rufo -testaceous. Length .24 inch ; 6 mm. 



One specimen ; Louisiana. 



S. fossulatus Dej. Oblong, depressed, black, surface with silken lustre. 

 Thorax broader than long, base and apex equal, or the former slightly 

 narrower, sides regularly arcuate, hind angles rectangular, not prominent. 

 Elytra very little wider than the thorax, sides feebly arcuate, striae very 

 fine, serial punctures large and foveolate, apex feebly sinuate. Bodj^ be- 

 neath and legs piceous, shining, tibiae and tarsi usually paler. Length .24 

 inch ; 6 mm. 



This species is the least oval of this group and is easily known hy the 

 thorax, elytral punctures and lustre. 



Occurs in Georgia and Florida. 



S. ovalis Dej. Oblong oval, depressed, black, subopaque. Thorax with 

 the base and apex nearly equal or very little broader at base, sides regularly 

 arcuate, hind angles rectangular, not prominent. Elytra a little broader 

 at base than the base of the thorax, sides moderately arcuate, apex very 

 feebly sinuate, surface finely striate, intervals flat, serial punctures moder- 

 ate in size. Body beneath and legs piceous, surface slightly iridescent. 

 Length .28 inch ; 7 mm. 



Occurs in Georgia and Florida. 



S. ellipticus Dej. Oblong oval or elliptical, black, subopaque. Thorax 

 wider at base than apex, sides regularly arcuate, hind angles rectangular. 

 Elytra not wider than base of thorax, the margins of each nearly continu- 

 ous, surface finely striate, intervals flat or very slightly convex, serial punc- 

 tures very small, apex scarcely at all sinuate. Body beneath black, shining. 

 Legs rufo-testaceous. Length .20 — .24 inch ; 5 — 6 mm. 



