192 AMERICAN COLEOPTERA. 



E. aridus n. sp. 



Elongate oval, convex, densely clothed with ashy scales having a 

 faint flesh tint, and obscurely clouded with pale plumbeous chiefly 

 along the third and fifth elytral intervals ; prothorax with a narrower 

 median and wide lateral darker vittae, which are rather obscure. 

 Rostrum with transverse basal impression, median sulcus broad and 

 vague, lateral sulci short, convergent behind, vertex flattened, finely 

 carinate at middle. Prothorax barely one-third wider than long, 

 widest at middle, sides evenly rather strongly arcuate, apical marginal 

 impressed line obsolete, basal marginal line feebly impressed, distinct 

 only at sides ; surface with unevenly distributed larger and smaller 

 punctures, median line consisting of a series of more or less coalescent 

 larger punctures. Elytra oval, without evident humeri, widest at mid- 

 dle, nearly two and one-half times as long, and slightly more than one- 

 half wider than the prothorax ; striae fine, with fine rather distant punc- 

 tures ; intervals nearly flat on the disk, broadly convex laterally ; setae 

 spare and short. Tibiae not denticulate within. Length 14 mm. 



Described from a single male specimen taken by Mr. Rick- 

 secker in the hills on the western border of the Colorado 

 Desert, California. 



This species is nearest varius, differing from the single 

 example of the latter species before me in the larger size, 

 peculiar tint of the pale scales, finely carinate vertex (evenly 

 convex in varius), somewhat less coarsely punctate pro- 

 thorax, and more finely punctate elytral striae. 



E. mortivallis n. sp. 



Elongate oval, clothed with silver}' white scales, median impressed 

 line of prothorax and a lateral vitta of lead-black scales, middle of the 

 prothoracic disk and sutural interval of elytra more or less fulvous or 

 pale yellowish-brown ; intervals 2-4-6 slightly narrower and with darker 

 scales, giving a faint vittate appearance. Beak transversely impressed 

 at base, median sulcus moderate, lateral sulci rather short, subparallel, 

 broadly arcuate. Prothorax one-third to two-fifths wider than long, 

 widest at middle, sides broadly arcuate, basal and apical marginal 

 grooves obscure on the disk, becoming sharply defined at sides, disk 

 very finely not closely punctate, more coarsely punctured in the dark 

 lateral vittae. Elytra about three times as long as the prothorax, and 

 about one-half longer than wide; striae very fine, feebly punctured, 

 intervals flat, setae very sparse and minute. Legs and lower surface 

 silvery white, tibiae very finely denticulate within. Length 12-18 mm. 



Death Valley, California (Koebele). 



This fine species would fall near geminatus by Horn's table, 

 but this latter species differs in its more transverse and 



