152 MEMOIRS ON THE COLEOPTERA. 



third stria. Length (9) 2.9 mm.; width 1. 1 mm. Utah (south- 

 western), Weidt. Colorado (Alamosa), LeConte. 



praecinctum Lee. 



Entire elytra polished and immaculate, the micro-reticulation always 

 extremely feeble, generally only traceable near the apex and under 

 high magnifying power; striae more abbreviated as usual 13 



13 Form rather narrow and convex, polished, deep black; under surface 

 black, the legs piceous, the tibiae rufous; head four-fifths as wide as 

 the prothorax, with prominent eyes and moderately converging 

 sulci; antennae heavy, as long as the elytra, black, rufous beneath 

 at base, the medial joints obconic, less than twice as long as wide; 

 prothorax two-fifths wider than long, the sides strongly rounded 

 anteriorly, very oblique and straighter in about basal half to the 

 prominent and sharp, nearly right angles; impressions somewhat as 

 in prcccinctum; base three-fifths the maximum width; elytra more 

 than one-half longer than wide, barely two-fifths wider than the pro- 

 thorax, parallel, with arcuate sides; humeri rather broadly rounded, 

 the base subtransverse thence to the pedicel; striae excessively fine, 

 unimpressed, gradually obsolete behind the middle, the punctures 

 well separated and extremely minute; foveae small, slightly before 

 basal and at apical third. Length (cf) 3.0 mm.; width i.o mm. 

 New Mexico (Fort Wingate), Shufeldt tenax n. sp. 



Form broader, more oblong, not quite so convex, shining, deep black; 

 under surface black, the legs uniformly piceous; head as in the pre- 

 ceding in form and relative size; antennae long, fully as long as the 

 elytra, slender basally, somewhat incrassate distally, black, the basal 

 joint rufous beneath; medial joints twice as long as wide; prothorax 

 two-fifths wider than long, widest near anterior third, the sides 

 evenly and strongly rounded from apex to the short parallel part at 

 the sharp right angles; impressions as in prcccinctum; base three-fifths 

 the maximum width; foveae deep, rounded; elytra parallel, with 

 feebly arcuate sides, fully one-half longer than wide, scarcely one- 

 half wider than the prothorax, the base transverse from the broadly 

 rounded humeri to the pedicel; striae fine, just visibly impressed 

 suturally, traceable almost to the declivity; punctures very small 

 and widely separated; foveae rather before basal and behind apical 

 third. Length (cf) 3.0 mm.; width 1.12 mm. Nevada (Elko), 

 Wickham veridicum n. sp. 



Form narrower than in the preceding, the elytral striae much more abbre- 

 viated, black, polished, the elytra in the type with slightly piceous 

 tinge; legs obscure rufous throughout; head' four-fifths as wide as 

 the prothorax; antennae heavy, almost as long as the elytra, black- 

 ish, obscure rufous at base, the medial joints not quite twice as long 

 as wide; prothorax two-fifths wider than long, formed as in the pre- 

 ceding, except that the base is nearly two-thirds the maximum 

 width, the angles sharp, almost right and abruptly prominent; ely- 

 tra one-half longer than wide, two-fifths wider than the prothorax, 

 the parallel sides moderately arcuate ; humeri rather rapidly rounded ; 

 series of rather small separated punctures unimpressed and abbre- 

 viated in fully apical third; seventh series as strong as the others 



