196 MEMOIRS ON THE COLEOPTERA 



more broadly, nubilously rufescent posteriorly, the pubescence above 

 rather short, moderately coarse and obscurely cinereous, beneath more 

 ashy but unusually short and loose; head moderately punctulate; an- 

 tennae pale, with piceous elongate-oval club, its second joint three-fourths 

 as long as the first, with rather fine suture, the cavity extending to basal 

 fifth or sixth of the prothorax, the latter short, much more than twice as 

 wide as long and less than a third as long as the elytra, the sides parallel 

 in nearly basal half, converging thence to the apex; basal lobe not sharply 

 truncate, the punctures minute and well separated; elytra two-fifths 

 longer than wide, distinctly wider than the prothorax, the sides straight, 

 evenly arcuate inwardly at base to the prothorax, the humeral swellings 

 not prominent from above, longitudinally ridge-like; punctures strong 

 and close-set, triangular, attenuate at their anterior ends; under surface 

 densely punctate; legs in great part ferruginous. Female smaller and 

 more oval than the male, the prothorax smaller, less transverse, with more 

 strongly and evenly convergent sides, the antennae much smaller, the 

 joints of the club more nearly equal and the suture deeper, the cavity 

 however unusually long for this sex, extending nearly to basal third of the 

 prothorax. Length (cf 9 ) 1.8-2.2 mm.; width 1.0-1.2 mm. Utah 

 (Provo and Nephi), Wickham. 



Allied to fuscidava Csy., of the Texan fauna, but with a shorter 

 prothorax, more distinctly narrower than the elytra, and with much 

 stronger and more close-set elytral punctures. All four examples 

 from Provo are males, the single female being one of the four 

 female specimens from Nephi, representing the allied nephianum. 



Cryptorhopalum nephianum n. sp.- Body somewhat as in uteanum, but 

 broader, shining, black, the elytra rather bright rufous, nubilously black- 

 ish only near the base as a rule; head small, the fine punctures widely 

 separated; antennae moderate, with the cavity extending fully to the 

 middle of the prothorax, pale, the club feebly infuscate, sometimes with 

 the apical joint dark and the basal pale, oval, more pointed apically, the 

 second joint slightly shorter than the first, the suture deep and impressed; 

 prothorax not quite twice as wide as long and evidently narrower than 

 the elytra, the moderately converging sides evenly arcuate; punctures 

 minute and sparse; elytra not a third longer than wide, parallel, evenly 

 rounded in about apical third, the punctures fine, slightly compressed in 

 form, separated by four or five times their diameters; pubescence, under 

 surface and legs nearly as in the preceding. Length (9) 2.1-2.3 mm.; 

 width 1.15-1.25 mm. Utah (Nephi), Wickham. Three examples. 



Related rather closely to uteanum but having the elytral punctures 

 finer and sparser, the surface smoother, and differing especially in 

 having the thoracic cavity for the female antennal club shorter, the 

 club itself apparently somewhat more developed, however, in that 

 sex. 



Cryptorhopalum aridum n. sp. Form oblong, with the elytra slightly 



