40 H. C. FALL. 



viewed from above; apical marginal impressed line evident; surface 

 within the angles not distinctly impressed. Elytra rather more than 

 three times as long as the pro thorax, two-fifths longer than wide; 

 discal costae distinctly defined; intercostal spaces rather wide, con- 

 fusedly punctate, the punctures coarser and closer than on the thoracic 

 disk. Metasternum broadly nearly smooth at middle, moderately 

 coarsely punctate at sides. Abdomen coarsely punctate at sides, 

 sparsely more finely so at middle. Hind coxas nearly or quite im- 

 punctate; hind thighs subimpunctate between the submarginal series 

 of punctures. Upper tooth of front tibia midway between base and 

 apex. Ungual tooth median in position, its apex nearly equally 

 distant from base and tip of claw. Length 12-12.5 mm.; width 

 6.6—7 mm. 



The type series was taken at Stockton, Utah, by Mr. Tom 

 Spalding, and sent me by Mr. Knaus. The species has also 

 occurred at Salt Lake, Utah; Flagstaff, Ash Fork and Tucson, 

 Arizona (the last not quite typical); Nevada; California; New- 

 Mexico. 



The impunctate hind coxae are the most characteristic fea- 

 ture of this species, in which respect it is approached closely 

 by haydenii alone. In the Tucson, Arizona, specimen and in 

 one California example there are a few punctures along the 

 hind margin of the coxa, but these specimens agree in other 

 respects with the type. 



26. r>. haydenii Lee. 



Oblong oval, moderately elongate, not or scarcely wider behind, 

 rufotestaceous, shining, the elytra and sometimes the thorax very 

 minutely alutaceous. Mentum declivity beginning at the anterior 

 third, its summit without acute edge or erect setae. Clypeus truncate 

 and feebly sinuate at middle the angles rounded, closely punctate, the 

 suture rather strongly impressed. Front more sparsely punctate but 

 somewhat variably so, the clypeal suture often narrowly smoother; 

 post-clypeal convexity broad but evident. Prothorax twice as wide 

 as long, widest at or a little behind the middle, the sides nearly straight 

 and as a rule slightly convergent posteriorly; rather strongly con- 

 vergent anteriorly; front angles acute and more prominent than usual, 

 hind angles a little obtuse but sharply defined; anterior margin with 

 distinct impressed line, the three lateral foveae usually distinct but 

 somewhat variable; punctuation rather fine and sparse, the punctures 

 separated on the average by twice their diameters. Elytra about three 

 and one-half times as long as the prothorax; discal costae distinct, 

 intercostas wide and confusedly punctate, the first one at its widest 



