218 MEMOIRS ON THE COLEOPTERA 



fine and feeble series, which are obsolete apically; pygidium nearly 

 three times as wide as long, minutely, rather sparsely punctulate, 

 becoming feebly scabriculate at the ends and along the base, the 

 lower bead interrupted; apical abdominal bead very wide laterad 

 but obsolete medially. Length (9) 13.6-14.2 mm.; width 8.5-9.3 

 mm. Illinois and Michigan congestus n. sp. 



9 Sides of the thoracic base extending very slightly beyond the elytral 

 humeri as in the preceding. Outline oblong-suboval, very convex, 

 strongly shining, rather pale castaneous, the head and pronotum 

 darker and more rufo-piceous; head barely a third as wide as the 

 prothorax, sparsely, transversely rugose, the clypeus very feebly so, 

 the frontal ridge subprominent at the middle, rapidly evanescent 

 laterally; clypeus less abbreviated than usual, rather concave, the 

 subapical carina shorter, only a third as long as the width at base 

 and completely obsolete, the three small erect prominent teeth 

 arising from the level of the general surface behind them, this 

 formation evidently not being a result of wear; prothorax nearly 

 one-half wider than long, the sides evenly and distinctly arcuate and 

 converging from base to apex, the basal angles somewhat blunt at 

 tip, the lobe rather broad and moderate, the bevel of the basal edge 

 convex, not deep or well defined; punctures everywhere shallow and 

 umbilicate, sparse, larger and a little closer antero-laterad, fine and 

 remote through most of the remainder of the disk, with a nearly 

 punctureless median line; scutellum but little longer than wide, 

 obtusely ogival, feebly concave; elytra large, a sixth longer than 

 wide, only feebly and gradually inflated posteriorly, about a fifth 

 wider than the prothorax and twice as long, obtusely rounded at 

 apex; punctures and striae nearly as in the preceding, except that 

 there are apt to be some linearly arranged punctures on the slightly 

 wider alternate intervals and more scattered punctures near the sides, 

 which become obsolescent apically as usual; pygidium rather convex, 

 much less than three times as wide as long, finely, feebly scabriculate, 

 becoming pmooth and with minute, very remote punctures medially 

 and apically; apical bead unusually fine, becoming thick only at the 

 sides, obsolescent at the middle. Length (9) 15.3 mm.; width 

 9.7 mm. New York (the locality unrecorded) politus n. sp. 



Sides of the thoracic base not in the least projecting, the general outline 

 of the body much more pyriform. Color dark piceo-rufous, the 

 elytra rather less pale, the under surface and legs pale red-brown; 

 lustre shining; head much less than a third as wide as the prothorax, 

 the transverse rugulosity sharper, stronger and less sparse than in 

 politus, that of the clypeus feebler than on the vertex; base smooth 

 at the middle; frontal ridge fine and feeble but sharp and distinct; 

 slightly sinuate, becoming obsolete far from the sides; clypeus trape- 

 zoidal, distinctly concave, the subapical transverse carina half as 

 long as the basal width, much longer than in politus and feebly 

 elevated, the teeth large and obtusely triangular; prothorax rather 

 less than one-half wider than long, much smaller than in politus and 

 of a distinctly different outline, the converging sides very feebly 

 arcuate, gradually more strongly so and more convergent apically, 



