Baring 475 



dently wider than the prothorax and much more than twice as long, 

 the humeral swellings feeble but evident, the sides parallel, feebly 

 arcuate, gradually rounding behind; striae narrow; intervals four 

 or five times as wide as the grooves, with fine and sparse, very-feeble 

 and loosely confused punctuation and approximately single series 

 of minute and indistinct squamules; male with the abdomen im- 

 pressed medio-basally; anterior coxae separated by slightly less 

 than half their widths. Length (d* 9) 4-3-4-5 mn^- width 1.5- 



1.7 mm. Indiana. Four specimens tentus n. sp. 



Body relatively less elongate and slightly stouter, parallel, convex, 

 slightly shining, black, the legs partially picescent, the sparse fine 

 squamules forming a single line on the strial intervals; beak in the 

 male nearly as in the preceding but somewhat shorter, deeply sculp- 

 tured, thick and nearly straight, the antennae more apical, inserted 

 at three-fifths; prothorax shorter, about a fourth wider than long, 

 the sides subparallel, very feebly arcuate, gradually more rounding 

 before the middle to the tabulate apex, which is three-fifths as wide 

 as the base; punctures small, unevenly somewhat dense to sparse; 

 median smooth line uneven, sometimes entire; scutellum flat, 

 quadrate, more truncate behind and less emarginate than in tentus; 

 elytra three-fourths longer than wide, barely visibly wider than the 

 prothorax and evidently more than twice as long, the sides parallel, 

 feebly arcuate, the apex obtusely rounded; grooves as in tentus; 

 intervals more equal, four times as wide as the striae, finely, very 

 feebly and sparsely, unilineately punctulate; anterior coxae separated 

 by a third their width. Length (cf ) 4.0-4.2 mm.; width 1. 5-1. 6 

 mm. California (locality unrecorded). Two specimens. 



califomicus n. sp. 



The species described above under the name rotundicollis seems 

 to make the closest approach to calvus Lee, but, from the descrip- 

 tion which I drew from the original type, the size in the former is 

 very much smaller, the prothorax more rounded at the sides and 

 the elytra not wider than the prothorax and relatively very much 

 longer. 



The last two species of the table are of a peculiar type, strongly 

 recalling the European Limnoharis T-album, but the sides of the 

 body beneath completely lack the dense scales characterizing 

 Limnoharis; the beak is longer, still thicker and straighter, the 

 antennal club much narrower and the ventral pygidium of the male 

 more exposed at tip. 



Trichodirabius n. gen. 

 This genus is allied to the preceding in some general characters, 

 but differs radically in others; the prothorax, for example, is not so 



