18-3.] O^i [Horn. 



fourths to apex, second shorter, contiuued by regular punctures, third 

 short, basal, continued by irregular punctures, fourth as long as second, 

 and similarly continued, broadly arching at base and joining the sutural, 

 which is entire, but rather feebly impressed at its basal portion ; between , 

 the fourth and sutural an irregular row of punctures extending slightly in 

 front of middle forming a quasi fifth stria ; surface of elytra at apex 

 moderately coarsely but sparsely punctured ; punctures coarser near the 

 suture, and extending more anteriorly. Propygidium and pygidium 

 densely aud coarsely punctured, the latter somewhat aciculate, and with 

 the entire margin surrounded by a deep groove. Body beneath black, 

 legs piceous. Anterior tibiaj multidenticulate, middle aud hind tibiae 

 biseriately spinulose. Prosternum modei-ately elevated, but not carinate, 

 .striae divergent in front and strongly ascendent, terminating on each side 

 in front in a fovea. Length .18 inch ; 4.5 mm. 



One specimen from Texas. Resembles pensylvnniciis at first sight, but 

 may be known from every other Saprinus in our fauna by the entire mar- 

 ginal groove of the pygidium. The entire surface of the elytra has a few 

 punctures over the entire surface, but very distantly placed. 



S. assimilis, Payk, Mon. p. 63, pi. 5, fig. 7 ; Mars. Mon., 1855, p. 431, 

 pi. 17, fig. 60 ; extratieus, Knoch. Illig. Mag. VI., p. 34. 



Broadly oval, black, shining. Head sparsely punctulate, supra-orbital 

 stria obsolete. Thorax impressed near the anterior angles, disc smooth, 

 sides coarsely and densely punctured, margin smoother, base with very 

 few punctures and distinctly impressed in front of scutellum. Elytra 

 coarsely punctured at apex, punctures extending in the sutural I'cgion to 

 the middle ; external subhumeral stria short, deeply impressed, close to 

 the marginal ; humeral oblique not joining the internal subhumeral, 

 which is rather deeply impressed and terminating in punctures at apex ; 

 first dorsal extending thi-ee-fourths to apex, second somewhat shorter, 

 third and fourth equal shorter than the second, and terminating in coarse 

 punctures ; fourth stria joining the sutural which is deeply impressed at 

 basal portion, gradually becoming more feeble, and not attaining the 

 apex ; apical marginal stria wanting. Propygidium and pygidium 

 coarsely and rather densely punctured, the latter with a deep marginal 

 groove at apex, and a slight impression at tip. Anterior tibite finely 

 multidenticulate, middle and hind tibije biseriately spinulose, the poste- 

 rior the more finely. Prosternum smooth, broadly convex, striie strongly 

 ascending, terminating on each side in a fovea. Length .16-. 30 inch ; 

 4-5 mm. 



Occurs from the Middle States to Texas. 



S. ciibaecola, iVIars. Mon., 1855. p. 167, pi. 18, fig. 88 ; Horn, Trans. 

 Am. Eut. Soc, 1870, p. 140. 



Black, shining. Head sparsely punctui'ed, occiput slightly impressed, 

 supra-orbital stria subobsolete. Thorax smooth, at anterior' angles 

 broadly impressed, at sides punctured, coarsely in front, more finely and 

 sparsely toward the base and the extreme margin, basal mai-giu with a 



