136 AMERICAN COLEOPTERA. 



longitudinal vitta at the middle third approaching the suture posteri- 

 orly, black. Antennas barely reaching the hind angles of the pro- 

 thorax, nearly as in hieroglyphicus and allies, the third joint a little 

 wider apically, but not distinctly triangular, barely as long as the 

 fourth. Head small, scarcely half as wide as the prothorax ; front 

 flat, not closely punctate. Prothorax as long as wide, widest at base, 

 the hind angles moderately strongly divergent, sides arcuately and 

 rather strongly narrowed anteriorly, surface finely closely punctate, 

 hind angles not carinate. Elytra strongly widening to apical third, 

 where they are one-third wider than the prothorax, three-fourths longer 

 than wide, side margins rather broadly reflexed, stria? almost obliter- 

 ated except at base, the rows of punctures just discernible with a good 

 lens. Beneath finely closely punctate and pubescent. Length, 8.8-9.6 

 mm. ; width, 3.2-3.6 mm. 



Described from a series of five specimens taken by Dr. 

 Fenyes near Lake Tahoe, California. 



A very pretty species related to nigricollis, hieroglyphicus, 

 etc., but at once distinguishable by the elytral markings and 

 the nearly obliterated striae. The elytral vitta reaches the 

 suture and extends forward a short distance along it in one 

 specimen. 



C polygenus n. sp. 



Form rather narrow, parallel, reddish-brown, pubescence conspicu- 

 ous, pale ochreous in color. Antennae barely passing the hind angles 

 of the prothorax, joints 2-3 short, subequal, together a little longer 

 than the fouth, 4-10 triangular, the fourth about one-third longer than 

 wide, following joints very gradually becoming a little narrower and 

 shorter, the tenth scarcely twice as long as wide, the eleventh about 

 two and one-half times as long as wide. Head and prothorax rather 

 closely pubescent, the former broadly concave, margin of front arcu- 

 ate, not reflexed, closely rather coarsely punctate. Prothorax very 

 little longer than wide, sides nearly parallel, feebly narrowed near the 

 apex, hind angles short, not divergent and not evidently carinate. 

 punctuation rather coarse, deep, and dense throughout ; disk flattened 

 along the median line in front, and evidently impressed posteriorly. 

 Elytra parallel in basal two-thirds, strise rather strongly punctate, 

 intervals nearly flat on the disk, each with a series of fine punctures 

 each side, with more distant ones along the middle. Presternum 

 closely rather coarsely punctate, the flanks easily so ; prosternal 

 sutures single ; metasternum more finely less densely punctate, the ab- 

 domen finely rather sparsely punctured. Basal joint of tarsi subequal 

 to the next two, the third joint with a feeble apical lobe. Length, 

 10.5 mm. ; width, 3.2 mm. 



