n8 MEMOIRS ON THE COLEOPTERA. 



the base, the tempora nearly straight and slightly less prominent, the carinae 

 entire; antennae black, slightly pale basally, the second joint twice as long 

 as wide, nearly as long as the first, much longer than the strongly obconic 

 third, the outer joints gradually incrassate and very stout to the tip, strongly 

 transverse, the ninth and tenth mutually similar, the last as long as the two 

 preceding though only a little longer than wide, sharply ogival; prothorax 

 unusually small and rather strongly transverse, parallel and feebly arcuate 

 at the sides, rounding at apex, distinctly wider than the head and very ob- 

 viously narrower than the elytra, very obsoletely impressed along the median 

 line; elytra large, parallel, almost as long as wide, the apices barely at all sin- 

 uate laterally, the suture almost two-thirds longer than the prothorax; 

 abdomen distinctly narrower than the elytra, slightly narrowed apically, 

 the tergites subequal, only moderately short, the sixth (cf) rectilinearly trun- 

 cate at tip, with four very minute and feeble teeth, the two medial separated 

 by almost twice the lateral intervals. Length 1.8 mm.; width 0.48 mm. 

 Queen Charlotte Islands, Keen. 



The sterna and tarsi are of the usual type in the genus, the meso- 

 sternal process narrowly and circularly rounded at tip. This species 

 is very distinct in its smaller and rather transverse prothorax and 

 relatively longer elytra. 



Pseudota pimalis n. sp. More slender, rather shining, piceous, the head 

 darker, the elytra a little paler, piceous-brown, the abdomen black, the legs 

 very pale; punctures very fine, not dense, close and asperulate on the elytra; 

 head slightly wider than long, the eyes at two-thirds their length from the base, 

 the tempora at first parallel and equally prominent, then broadly rounded 

 to the base, the carinee fine, attaining the apex; antennae short, blackish, pale 

 basally, the outer six or seven joints forming a parallell-sided club, less stout 

 than in the other species, the second joint as long as the first but less stout, 

 only very little longer than the more basally constricted third joint, the outer 

 joints distinctly transverse, the last gradually pointed and as long as the two 

 preceding; prothorax rather strongly transverse, much wider than the head 

 and as wide as the elytral base, slightly widest at base, the sides thence very 

 feebly converging and broadly arcuate to the apex, the median line very 

 faintly impressed basally; elytra rather short and transverse, with feebly 

 diverging sides, infumate about the scutellum, the apices feebly oblique and 

 subsinuate laterally, the suture about a fourth longer than the prothorax; 

 abdomen rather long, a little narrower than the elytra, parallel, finely, sparsely 

 punctate; hind tarsi slender, with the four basal joints equal. Length 1.6- 

 1.9 mm.; width 0.35-0.38 mm. Arizona (Tucson). 



This species is aberrant in its shorter and broadly parabolic 

 metasternal projection, the mesosternal process extending nearly 

 to apical fourth of the distinctly separated coxae, its apex becoming 

 subparallel, moderately wide and circularly rounded at tip, the 

 usual interval much depressed. I took two specimens in the sub- 

 urbs, and subsequently received three from the same locality 



