1873.] 329 



fHorn. 



Occurs in Georgia and Missouri. Closely allied to conformis, but 

 differs by the absence of the external subhumeral, and the thorax much 

 more finely punctulate at tiie sides. It is compared by Marseul to neg- 

 lectus, with what it appears to have very little in common. S. latubris, 

 Lee, is a variety with the internal subhumeral reduced to a point. 



S. vescus, Mars. Mon., 1855, p. 488, pi. 17, fig. 106. 



Oblong oval, black, shining, moderately convex. Head sparsely and 

 finely punctured. Thorax sparsely punctured at the sides, and with a row 

 of coarse punctures along the base. Elytra sparsely and moderately 

 coarsely punctured at the apical half, punctures extending between the 

 stria- ; external subhumeral stria entirely absent, oblique humeral mod- 

 erately impressed ; internal subhumeral short apical ; dorsal stria deeply 

 impressed and punctured, first dorsal extending four-fifths to apex, and 

 at tip approaching the second dorsal, second and third nearly equal, 

 slightly shorter than the first, fourth somewhat shorter than the third, 

 archin--. at base joining the sutural which extends three-fourths to apex. 

 Propygidium moderately densely punctured, pygidium more sparsely and 

 finely punctured, gradually smoother to apex. Anterior tibia- finely den- 

 ticulate, middle and hind tibia; finely spinulose. Length .12 inch, 3 

 mm. ^ 



This species is very closely allied to placidus, Er., but differs in its 

 less convex form and more broadly convex prosternum. The elytral 

 punctures are finer and more densely placed, but extend more anteriorly 

 and also between the strke. The stria are also longer and not hooked at 

 base as is always is the case in plaeickba. Marseul's figure of vescus is not 

 characteristic. 



Through the great liberality of 31. Marseul, I have been enabled to 

 study this unique type from his cabinet. 



Occurs in Texas. 



S. parumpunctatus, Lee. Col. Kansas, 1859, p. 7. 



Broadly oval, castaneous, shining. Head sparsely punctured, supra- 

 orbital stria obsolete. Disc of thorax smooth, towards the sides sparsely 

 but not densely punctulate, punctures extending along the base in a mod- 

 erately wide space. Elytra sparsely punctured at apex, punctures very 

 sparsely extending to base along the suture ; external subhumeral very 

 close to the marginal and scarcely distinct ; oblique humeral moderately 

 impressed ; not joining the internal subhumeral which is feebly im- 

 pressed ; first dorsal extending four-fifths to apex, second and third 

 sub-equal, very slightly shorter, fourth extending to middle, arching at 

 base, joining the sutural which is entire ; apical marginal line obliterated 

 near the suture. Propygidium sparsely punctured, pygidium more densely 

 and coarsely punctured except near the apex. Prosternal stria divergent 

 scarcely ascending. Metasternum very coarsely punctured. Anterior 

 tibia finely denticulate, middle and hind tibia finely biseriately spinu- 

 lose. Length .12 inch ; 3 mm. 



a. p. s. — vol. xiii. 2p 



