6 MEMOIRS ON THE COLEOPTERA. 



black antenna? moderate in length and not strongly incrassate, the outer 

 joints less than one-half wider than long, the second and third long, equal, 

 slender, the first stouter and a little longer; prothorax formed nearly as in 

 concurrent but rather more transverse, more strongly punctured and with 

 the sides more converging from base to apex; elytra similar but relatively 

 wider and a little more transverse, the suture equal in length to the 

 pronotum; abdomen nearly similar throughout. Length 3.6 mm.; 

 width l.o mm. California (Marin Co.). 



Closely allied to concurrens but differing in the relatively 

 larger head and smaller prothorax, more narrowed from base to 

 apex, in the slightly longer and more bristling vestiture and less 

 parallel form of the body. 



Baryodma pumilio n. sp. Slender, subparallel, moderately convex, 

 polished, black, the legs piceous-brown, the elytra piceous-black, each 

 with a large pale spot near the inner apical angle; pubescence very sparse, 

 erect, not conspicuous; head relatively large, nearly two-thirds as wide 

 as the prothorax, the antenna? short, very stout, moderately incrassate, 

 the second and third joints moderately elongate, subequal, each much 

 shorter than the first, the tenth more than twice as wide as long, the 

 eleventh large, nearly as long as the three preceding; prothorax nearly as 

 in verna but shorter, less dilated than in minuta; elytra parallel, not very 

 transverse, slightly wider than the prothorax, the suture about equal in 

 length to the latter, the punctures rather coarse but well separated; 

 abdomen parallel, nearly as wide as the elytra, less punctured than in 

 verna and more slender than in minuta, the sixth tergite (c?) truncate 

 with rounded angles, the adjoining surface with a few coarse elevated 

 setose punctures laterally but not at the middle, the sixth ventral ob- 

 tusely produced and narrowly rounded at the middle, the lobe with a 

 fringe of long close setae. Length 1.9 mm.; width 0.42 mm. Iowa 

 (Cedar Rapids). 



This is the smallest Baryodma known to me; it is much more 

 slender than the Californian minuta. The type was included with 

 the minuta cotypes in my original study of that species (1. c., p. 161). 



Baryodma tolerata n. sp. Very slender, subparallel and rather con- 

 vex, shining, black, the elytra and legs blackish-piceous, each of the 

 former with a pale spot near the inner apical angle; pubescence coarse, 

 sparse and suberect; head relatively large, almost three-fourths as wide 

 as the prothorax, the antennae black, moderately short, not very stout 

 though distinctly and gradually incrassate distally, the first three joints 

 decreasing uniformly and rather rapidly in length, the tenth twice as 

 wide as long, the last longer than the two preceding; prothorax two-fifths 

 wider than long, the sides but feebly converging and slightly arcuate 

 from the rounded base to the apex, the basal angles broadly rounded; 

 punctures fine and remote, becoming coarse and close in the two sub- 

 impressed longitudinal lines basally; elytra a little wider than the pro- 



