492 Memoirs on the Coleoptera 



33 — Form stout, oblong, convex, deep black and subalutaceous; squam- 

 ules above white, distinct but sparse and finer and less conspicuous 

 than in the preceding, forming single interstitial lines, short and 

 sparse on the under surface, denser on the met-episterna; beak in the 

 female evenly, moderately arcuate, distinctly sculptured, slender 

 and not quite as long as the prothorax, the antennae medial, the 

 club narrower than in henigna; prothorax large, scarcely at all 

 wider than long, the sides parallel, gently rounding from before the 

 middle, the tubulate apex two- thirds as wide as the base; punctures 

 rather coarse, close anteriorly, sparser basally, the median smooth 

 line narrow but well defined and entire; elytra short, the sides 

 feebly arcuate to the obtusely rounded apex, as wide as the pro- 

 thorax and three-fourths longer; striae moderate, the punctures 

 widely spaced but evident; intervals nearly as in the preceding, the 

 punctures sparse and very minute; prosternum similar. Length 

 (? ) 2.35 mm.; width 0.88 mm. Florida (Baldwin)., .arnica n. sp. 



Form very much narrower, less convex, deep submetallic black, the 

 lustre rather shining; squamules above sparse and rather fine but 

 distinct in single interstitial lines, on the under surface sparse but 

 closer on the met-episterna; beak sculptured in both sexes and 

 feebly arcuate, as long as the prothorax in the female, evidently 

 shorter and rather more arcuate in the male; prothorax as long as 

 wide, the sides parallel, rounding rather rapidly near the tubulate 

 apex, which is two-thirds as wide as the base; punctures strong 

 and well separated throughout; elytra two-fifths (cf ) to one-half 

 ( 9 ) longer than wide, the sides parallel and nearly straight, rounding 

 rather rapidly behind, as wide as the prothorax and three-fourths 

 longer; striae notably fine; intervals with minute and widely separ- 

 ated serial punctures. Length (cf 9 ) i. 65-1. 9 mm.; width 0.5- 

 0.7 mm. Florida (Enterprise and elsewhere) and North Carolina 

 (Southern Pines). Ten specimens concinna Lee. 



Form intermediate in vStoutness between the two preceding species, 

 parallel, deep black, slightly shining, the sparse squamules as in 

 concinna, shorter and less conspicuous than in arnica; beak in the 

 male rather slender, conspicuously sculptured, feebly and subevenly 

 arcuate and as long as the prothorax, the antennae at four-sevenths; 

 prothorax nearly as long as wide, the sides feebly, subevenly arcuate, 

 gradually parallel basally, the apex only feebly constricted and three- 

 fifths as wide as the base; punctures coarser than in concinna, these 

 and the median line nearly as in arnica; elytra nearly as in concinna 

 but broader, three-fourths longer than the prothorax and exactly 

 equal in width; striae not so fine, the fine remote interstitial punc- 

 tures nearly similar, much feebler and less conspicuous than in 

 arnica; anterior coxae separated by half their width. Length (cT') 

 2.0 mm.; width 0.65 mm. Texas (Housto'n) houstoni n. sp. 



The species of this genus are very numerous but are well defined 

 as a rule, and should be easily identified by the characters recorded 

 above. The concinna section is very strongly differentiated, as is 



