NORTH AMERICAN COLEOPTERA. 11 



This species greatly resembles the smaller forms of gemmatus, and 

 also moUinus, the latter more especially. AVith the former it agrees 

 in having the post-mesocoxal line and differs in the absence of the 

 epipleural line. From the latter, which has no post-mesocoxal line, 

 it is easily known. 



This species is widely distributed. California, Oregon, Nevada, 

 Wyoming, Canada, Illinois, Nova Scotia, Nebraska, Louisiana and 

 District of Columbia. 



H. Scliwarzi n. sp. — Obloug, convex, piceoiis, clothed with the usual semi- 

 erect brownish pubescence, the margins fimbriate with longer hairs, elytra with 

 the usual sinuous bands, which are usually broad, often broken into spots, these 

 also large. AntennsB brownish, paler at base. Head densely punctate, clypeus 

 emarginate. Thorax rather more than twice as wide as long, sides arcuate, nar- 

 rowed in front, more distinctly so in the female, base distinctly sinuate each 

 side, the marginal line well marked, disc convex, closely finely punctured ; color 

 entirely piceous. Elytra parallel, disc very vaguely substriate at middle near 

 the base, the punctuation coarse and deep, closely, but not densely placed ; color 

 piceous brown, with the usual yellowish sinuous bands, which are often inter- 

 rupted. Epipleurfe pale. Body beneath brownish, paler than the upper surface, 

 sometimes almost entirely testaceous. Metasternum with distinct post mesocoxal 

 line. Abdomen closely punctulate, not densely pubescent. Legs entirely pale. 

 Length .12 inch. ; 3 mm. PI. 1, fig. 10. 



Male. — Labrum more than twice as wide as long, with a slight broad emar- 

 gination at apex. Mandibles not prominent, front very slightly retuse. Thorax 

 more broadly arcuate than in the female, less narrowed in front. 



Female. — Labrum and mandibles scarcely difiering from the male. Front not 

 retuse, clypeus more distinctly emarginate. Thorax very distinctly narrowed 

 in front. 



Variations. — The only variation observed is in color, the markings 

 being sometimes continuous, often broken into spots. The under- 

 side varies from brown to yellow. 



This species is very closely related to collaris in its small varieties, 

 and the two are difficult to separate by any absolute character. The 

 present is more robust and convex, the color above, especially the 

 thorax, in great part piceous brown, the elytra always with faint 

 traces of strite. In none of the specimens of collaris have I observed 

 the thorax approaching the dark color of the present species ; it is 

 at most pale brown with broadly paler sides. 



Occurs in Burnet County, Texas, from Mr. E. A. Schwarz ; also 

 in the Lake Superior region (cab. LeConte) and near Allegheny, 

 Pa. (Dr. Haujilton) 



H. collaris Kies. — Oblong, moderately convex, fuscous or piceous, clothed 

 in the usual manner with brownish hair, sides of thorax pale, elytra with the 



