HlSTERID^E 251 



* 



Acritus angustus n. sp. Still narrower than the preceding, strongly 

 convex, very shining, pale brownish-testaceous in color; head with the 

 punctures everywhere minute; prothorax scarcely more than one-half 

 wider than long, the sides almost evenly arcuate, but slightly diverging 

 toward base; surface convex, without subbasal series, the punctures 

 very small but distinct, rather well separated; elytra nearly as in the 

 preceding but narrower, inflated behind the base, the punctures small 

 and sparse; prosternum as in the preceding but with finer striae; punc- 

 tures toward the sides of the metasternum not so strong as in sparsellus 

 and twice as sparse. Length 0.65 mm.; width 0.3 mm. Ohio (Cincin- 

 nati), Soltau. One specimen. 



This species is allied to the two preceding, but is narrower and is 

 the smallest of the genus known to me. It is much more convex, 

 very much narrower, more rhomboidal and feebly sculptured than 

 exiguus. 



Acritus parallelus n. sp. Elongate, parallel, with evenly and feebly 

 arcuate sides, rather convex, polished, castaneo-rufous in color, feebly 

 sculptured; head large, more than half as wide as the prothorax, minutely, 

 sparsely punctate, the antennae longer than usual, the cylindrical third 

 joint similar to the second but smaller, 4-8 still narrower, globular and 

 moniliform, the club pale as usual; prothorax large, two-thirds wider 

 than long, the sides very feebly converging, slightly arcuate, rounded at 

 apex; surface without subbasal series, the punctures everywhere minute 

 and very sparse; scutellum twice as large as in exiguus, equilatero- 

 triangular; elytra narrowed but little posteriorly, not at all dilated 

 behind the base, the ground smooth and polished like the pronotum, 

 the punctures minute and very sparse; each elytron has an oblique im- 

 pressed discal line basally; pygidia finely but strongly micro-reticulate 

 and with almost obsolete remote punctulation; prosternum flat, densely 

 micro-reticulate, the striae subparallel, widely flaring at apex but not 

 at all at base, the included surface one-half longer than wide, its base 

 sinuate; tarsi not very slender; anterior tibiae dilated and somewhat 

 arcuate. Length 0.7-1.0 mm.; width 0.35-0.65 mm. Virginia (Fort 

 Monroe). Seven specimens. 



This species differs greatly from exiguus in its elongate parallel 

 outline, greater convexity, more minute and very sparse punctures, 

 larger scutellum, and, distinctly, in the form and disposition of 

 the prosternal striae, which do not diverge at all basally; it varies 

 very much in size, as may be noted. Parallelus may belong to the 

 same section of the genus as the Californian maritimus, which is 

 placed in the subgenus Halocritus Schm., in the Bickhardt list. 



The two following species, allied to discus Lee., differ very much 

 from those that precede in their larger size, broadly rounded outline, 

 long transverse subbasal series of punctures on the pronotum, more 



