2oo MEMOIRS ON THE COLEOPTERA 



wider than long, widest slightly before the middle, where the sides are 

 rather broadly rounded, thence feebly converging, becoming straight, 

 to the obtuse but very sharply defined basal angles, the surface with 

 no more than feeblest trace of a transverse ante-scutellar impression; 

 elytra evidently shorter than wide, parallel, only just visibly wider, 

 the suture fully two-fifths longer, than the prothorax, the apical sinuses 

 feeble; abdomen parallel, with thick margins, almost as wide as the 

 elytra. Length 2.5 mm.; width 0.6 mm. Ohio (Cincinnati), Dury. 



Allied rather closely to tricolor Csy., ( = caseyi Fenyes, tricolor 

 not being a preoccupied name in Leptusa, the tricolor of Scriba 

 belonging to Pasilia, which should be considered a genus distinct 

 from Leptusa), but differing in its less dense sculpture of the anterior 

 parts, slightly shorter antennal joints throughout, the outer joints 

 being decidedly shorter and more transverse, in the sides of the 

 prothorax being less prominent before the middle and thence less 

 converging basally, in the much shallower sinuses at the elytral 

 apices and in other characters of importance; the sex of the type is 

 undetermined. This species was confounded with tricolor Csy., 

 under my original description of the latter. 



Leptusa iowensis n. sp. Form and sculpture nearly as in tricolor 

 but much narrower and a little more shining, pale red-brown in color, 

 the abdomen not paler but more rufous, the fourth tergite very feebly 

 clouded, the legs pale; punctures of the head rather large but feeble, 

 close, of the pronotum fine, dense and confused, asperulate, of the elytra 

 rather coarsely asperate, close, of the more shining abdomen fine, as- 

 perate and rather close though becoming sparser posteriorly, the deep 

 concave impressions as in the preceding and tricolor; head nearly as 

 long as wide, almost three-fourths as wide as the prothorax, the eyes 

 small, prominent, at rather more than their own length from the base, 

 the tempora long, gradually converging and arcuate behind them; 

 antennae pale brown, still paler at apex and toward base, extending almost 

 to the middle of the elytra, gradually though only moderately incrassate, 

 the third joint as long as the second but thinner, fourth not quite as 

 long as wide, tenth fully two-thirds wider than long, the last ogival, a 

 little longer than the two preceding; prothorax convex, two-fifths wider 

 than long, widest at two-fifths from the apex, where the sides are broadly 

 rounded, thence distinctly converging, becoming straight, to the obtuse 

 but sharp basal angles, the basal impression almost obsolete; elytra but 

 slightly transverse, scarcely visibly wider, the suture a third longer, 

 than the prothorax, the apical sinuses very deep; abdomen parallel, 

 long, distinctly narrower than the elytra. Length 2.3 mm.; width 0.5 

 mm. Iowa (Iowa City), Wickham. 



Also allied to tricolor, differing in its slightly longer and much less 

 incrassate antennae, less transverse head, less prominent sides of 



