NORTH AMERICAN COLEOPTERA. 7 



with the usual sinuous bauds always interrupted and sometimes indistinct, 

 rarely a basal spot. Antennae piceous, the basal joint paler. Head densely 

 finely punctulate. Thorax twice as wide as long, sides arcuate, base arcuate at 

 middle, oblique each side and with a distinct marginal line, disc moderately 

 convex, densely finely punctulate. Elytra parallel iu both sexes, substriate, 

 closely punctulate, sinuous bands interrupted on the disc and not united at the 

 margin by a pale border. Epipleurje piceous. Body beneath piceous, more shin- 

 ing than above, finely closely punctulate, anterior angles of prothorax, tip of 

 prosternal lobe, sides and tip of abdomen narrowly yellow. Femora reddish 

 yellow, piceous at base, tibife piceous, tarsi pale. Length .24 inch. ; 6 mm. PI. 

 1, figs. 3-4. 



Male. — Labrum obliquely sinuately narrowed at apex, prolonged at middle in 

 a process about one half as long as the body of labrum, feebly emarginate at 

 tip. Mandibles prolonged and slender, the post apical teeth very indistinct: 

 front refuse. Thorax rather more than twice as wide as long and slightly wider 

 than the elytra, sides regularly arcuate, not narrowed in front. 



Female. — Labrum broader than long, sinuate each side of apex, slightly pro- 

 longed at middle and with a slight emargination. Mandibles shorter and stouter 

 than in the male, the teeth distinct. Thorax distinctly narrowed in front, not 

 broader than the elytra. 



Variations. — Beyond the varying degree of interruption of the 

 sinuous bands no differences have been observed beyond those given 

 in the description. 



From all the species which precede this may be known by the 

 absence of the juxta-scutellar yellow spot. The females bear a very 

 close resemblance to gemmatus so common in the Pacific i-egion, but 

 the absence of a post-mesocoxal line in ventralis will enable the two 

 to be separated. It is more difficult by description alone to separate 

 the females of this and undatus, but the labrum of the latter is not 

 sinuate each side and the emargination broader. 

 Occurs in Pennsylvania, New York, Ohio. 



H. lindatus Mels.— Oblong, moderately convex, piceous or brown, thorax 

 variable, elytra with the usual sinuous bands more or less interrupted, a sub- 

 apical lunule, but no basal spot, surface clothed with brownish pubescence, the 

 entire margin distinctly fimbriate. Antennge piceous. Head piceous, densely 

 punctulate. Thorax twice as wide as long, sides arcuate, base arcuate, distinctly 

 sinuate at the sides, the marginal line distinct, disc densely punctulate, some- 

 times entirely piceous, or with the front angles yellow, or the sides narrowly 

 yellow. Elytra oblong, parallel in both sexes, usually substriate, often not so, 

 the surface densely i)unctulate, piceous or brown, with the usual sinuous, more 

 or le.ss interrupted bands, which are sometimes united at the margin by an entire 

 pale border; surface densely punctulate, the punctures varying iu degree. Epi- 

 pleuriE usually piceous, rarely either entirely pale, or pale at base only. Body 

 beneath piceous, the front angle of prothorax sometimes, the sides of abdomen 

 narrowly yellow. Abdomen densely finely punctulate. Femora yellowish or 

 brown, tibia; piceous. Length .16 — .18 inch. ; 4 — 4.5 mm. PI. 1, fig. 6. 



