626 Coleopterological Notices, VII. 



widel}'- separated, the antennal tubercles large, separated by a 

 broad longitudinal depression which is much more abruptly lim- 

 ited at the sides ; in spinosus the tubercles become more flattened. 

 The integuments are nearly smooth, the pronotum traversed near 

 the base by a fine continuous furrow, with slight enlargements at 

 the sides and in the middle but not pubescent. The discal furrow 

 of the elytra vanishes behind the middle, and the basal segment 

 of the abdomen has two distinct sublateral carinse in about basal 

 half and a short tumid projection at the middle of the base. The 

 ventral segments diminish rather gradually in length as in Pilo- 

 pius, but the last ventral of the male is large, convex and polished, 

 with the tip produced slightly in a rounded lobe, the last dorsal 

 short and very tumid. There seem to be three species which may 

 be defined as follows from the males : — 



Head transversely excavated at apex between the large antennal cavities, the 

 narrowed front deflexed, with the tip narrowly rounded and free ; clypeus 

 tumid and setose at the middle ; body large and stont. 

 Antennae much less stout, distinctly enlarged toward tip ; elytra transverse, 

 at least }^ wider than long, rather strongly, though not densely, punc- 

 tate, and wider than the abdomen, the side margin of the latter concave 



inwardly toward base ziegleri Lee. 



Antennae stouter and longer, only very feebly enlarged toward tip ; elytra 

 larger and less transverse, scarcely ^4^ wider than long, very finely and 

 rather sparsely punctulate throughout, the vestiture a little shorter ; ab- 

 domen as -wide as the elytra, with the broad and feebly inclined lateral 

 margin perfectly flat throughout ; anterior tibiae thicker ; body larger and 

 much stouter, nearly similar in the crural spines and feeble sexual char- 

 acters. Length 2.5 mm. ; width 1.0 mm. District of Columbia. 



roliustus n. sp. 

 Head not transversely excavated at apex, the narrowed front between the an- 

 tennal cavities vertical and continuous to the upper surface of the clypeus, 

 which is not at all tumid in the middle ; body much smaller and narrower. 



spinosus Lee. 



The tarsi in Cedius are much longer than in either Tmesiphorus 

 or Pilopius. The genus seems to be confined to the eastern parts 

 of the United States. 



The figure of C. spinosus given by Dr. Brendel in the " Mono- 

 graph," is not at all correct, the true form being much narrower, 

 with more elongate elytra and with the usual two carinse of the 

 abdomen as distinct as in the others. 



