HlSTERIDJE 



icollis is to be found in but very few collections. The group con- 

 tains those wholly black species having the pro thorax unciliated, the 

 mesosternum sinuate, the subhumeral stria entire, the elytra with 

 four entire discal striae and the outer pronotal stria wanting or 

 greatly abbreviated. The two following species seem to be distinct 

 from any hitherto characterized: 



Hister texensis n. sp. Broadly oblong-oval, convex, polished, the 

 legs deep black; head smooth, the ambient stria entire, transverse or 

 but feebly sinuate on the front; prothorax rather short, almost twice as 

 wide as long, trapezoidal, with evenly and feebly arcuate sides throughout; 

 surface becoming rather strongly punctate toward the inner lateral stria, 

 which is abbreviated basally, the outer stria ending very near the margin 

 slightly behind the middle, the intervening surface not notably convex; 

 elytra transverse, the sides almost evenly continuing the curve of the 

 thoracic sides; discal striae coarse, three reaching the base, the fourth 

 very nearly, fifth and sutural distinct in about apical half, subequal in 

 length, subhumeral coarse, subentire, humeral wanting, the oblique 

 humeral fine, only slightly oblique; pygidia both opaque and with dense 

 moderate punctures; prosternal lobe not margined; mesosternum very 

 broadly and moderately sinuate; hind tibiae slightly arcuate and moder- 

 ately thickened, the anterior with six small equal serrules. Length 6.0 

 mm.; width 4.25 mm. Texas, Soltau. 



Comes near fcedatus but larger and differing in the densely 

 opaque, more finely punctate pygidia and more broadly, though not 

 more shallowly, sinuate mesosternum, and more numerous serru- 

 lations of the anterior tibiae. Fcedatus does not seem to be at all 

 common. My few examples are from Rhode Island and Michigan. 

 A very extended distribution was given it by Dr. Horn, who doubtless 

 included several mutually distinct species among his material. 



Hister umbratilis n. sp. Not very broadly, rather evenly oval, convex, 

 shining, the legs deep black; head nearly smooth, the lateral parts of the 

 stria strongly converging as usual in this group, transverse on the front, 

 entire; prothorax relatively rather small, strongly transverse, its arcuate 

 converging sides continuing the curve of the elytral sides; surface mi- 

 nutely, remotely punctulate throughout, with but very few stronger 

 punctures along the inner lateral stria, which is coarse, very nearly 

 attaining the base, the outer very fine throughout, very close to the 

 outer edge, extending slightly behind the middle and ending anteriorly 

 in a cluster of punctures; elytra slightly transverse, with the sides evenly 

 and strongly rounded; subhumeral stria subentire; dorsal striae deeply 

 impressed, the first three entire, the fourth abbreviated slightly at base 

 and much curved posteriorly, the fifth and sixth subequal, extending 

 from behind the middle nearly to the apical margin; pygidia very closely, 

 subevenly and rather coarsely though not deeply punctate; prosternal 



