COLEOPTERA OF SOUTHERN CALIFORNIA. 265 



The description is drawn from seven examples, all of 

 which are from San Diego or the vicinity. 



The hind tibiae are apparently very slightly more 

 strongly sinuate along the inner margin in the males, 

 but this difference is hardly enough in itself to suggest 

 the placing of this species in the subgenus Gnemocyllus ; 

 the affinities in other respects are, however, obviously 

 in that direction, and A. stolatus should find a place 

 near decipiens, from which, and all others of the sub- 

 genus (except possibly A.ligatus), it differs in the almost 

 entire lack of sexual difference in the posterior tibite; 

 from A. ligatus it may be separated by color and also 

 the longer ungual teeth. 



86. Epimechus arenicolor, sp. nov. 



Elongate-obloug, color of derm varying from testaceous to rufous, the 

 thorax and abdomen usually darker and the legs and antennae paler than 

 the elytra; moderately densely clothed with broadly oval, pale, dull yel- 

 lowish scales, which are nearly uniform in color throughout and as a rule 

 do not overlap, but become denser or even strongly imbricate in the posi- 

 tion of the usual paler vittse in Gnemocyllus. Head clothed with sparser, 

 more elongate scales; eyes feebly convex, hind margin not free; front 

 narrow, the eyes separated by a distance distinctly less than their own 

 width as seen from the front; beak moderately long and evenly arcuate, 

 punctate in longitudinal series, not distinctly carinate above at base; 

 anteunal funicle, slender, second joint one-half longer than the third. 

 Prothorax evidently transverse, sides subparallel at base, gradually arcu- 

 ately narrowed in front, apex very slightly constricted; surface deeply, 

 rather densely punctate. Elytra slightly wider at base than the prothorax, 

 sides parallel to apical third, apex rather narrowly parabolically rounded; 

 strial punctures nearly as wide as the intervals, the latter feebly convex 

 and slightly rugose. Last ventral segment (in the male) longer than the 

 two preceding united. Femora rather stout, the anterior feebly toothed; 

 hind tibiaB (in the male) distinctly but not strongly curved at apex; claws 

 simple. 



Length, 2-2.5 mm. 



All specimens seen are from Arizona — Phoenix (Strom- 

 berg) and Palomas. 



