1873.] 4—1} [Horn. 



middle, separated from the lateral by a sinuous row of very coarse punc- 

 tures, lateral vittae very broad at base and with an oblique branch. Scu- 

 tellum shining broadly concave. Elytra oval, moderately narrowed to 

 tip, surface finely striate, striae with very coarse punctures distantly 

 placed, forming irregular transverse series, intervals sub-equal, surface 

 irregular and evidently punctate, sub-apical callus feeble. Pygidium 

 coarsely and sparsely punctured and slightly pubescent at tip. Body 

 beneath glabrous at middle, coated at the sides, coarsely but very 

 sparsely punctate. Legs coated. Length .28-36 inch ; 7-9 mm. 



Closely allied to the preceding species, and has also the base of thorax 

 moderately lobed at middle, it differs especially in its thoracic and elytral 

 sculpture and smaller size. 



Middle, Western and Southern States. 



S. melanocephalus Fab. Syst. El. II., p. 435 ; Oliv, Ent. V., 83, 

 p. 93, pi. 28, fig. 419 ; nubilus, Gyll., Schonh., Gen. Cure, IV., p. 938. 



Body black, densely clothed above with pale ochreous or cinereous ar- 

 gillaceous coating. Rostrum two-thirds the length of thorax, compressed, 

 tip slightly dilated, base rather suddenly wider over the insertion of the 

 antennas, sparsely punctured, at base much more coarsely and deeply. 

 Thorax longer than wide, apex strongly constricted, in front suddenly 

 broader, thence sub-parallel, base moderately lobed at middle, surface 

 sparsely and coarsely punctured, vittae short, median represented by a 

 short apical carina slightly dilated posteriorly, lateral by an indistinct 

 line ; on each side near the front angles a small round callosity. Scutel- 

 lum glabrous, slightly concave. Elytra moderately robust, oval, gradu- 

 ally narrowed behind, surface finely striate, striae with coarse punctures 

 moderately distantly placed, intervals Hat slightly alternating, the seventh 

 at tip slightly elevated in callus. Pygidium coarsely and sparsely punc- 

 tured, a slight tuft of hairs on each side of tip. Body beneath very 

 coarsely but sparsely punctured. Length .30-. 38 inch ; 7.5-9.5 mm. 



When the surface coating is removed the intervals are seen to be uni- 

 seriately punctate. 



Occurs from Georgia to Kansas. 



S. Sayi Gyll. Schonh., Gen. Cure. IV., p. 943; subcarinatus, Mann. 

 Bull. Mosc, 1843, II., p. 294 ; Schonh., Gen. Cure. VIII., 2, 255. 



Piceous, frequently rufous, shining. Rostrum slender, three-fourths 

 the length of thorax, suddenly dilated over the antennal scrobes, sparsely, 

 at base coarsely and densely punctured, finely canaliculate and between 

 the eyes transversely impressed. Thorax longer than wide, constricted 

 in front, sides anteriorly rapidly broader, thence sub-parallel to base ; 

 above truncate, median vitta slightly abbreviated in front, at middle 

 moderately dilated, thence finely prolonged to base, lateral vittae sinuous, 

 approximating in front, slender and without lateral process ; surface 

 coarsely punctured, on each side of median vitta variolate. Scutellum 

 feebly longitudinally concave. Elytra elongate oval, slightly narrowed 

 A. p. s. — vol. sin. 3b 



