NORTH AMERICAN COLEOPTERA. 



9 —Geueral color of upper surface brownish, often quite pale in the small speci- 

 mens, thorax merely slightly darker at middle, rarely entirely brown ; 

 mandibles of male with a basal lobe on outer side more or less angulate. 



collaris. 



General color piceous, thorax piceous, often sharply bordered with pale; 



mandibles of male not prominent at base; elytral markings tending to 



J. „uf^ tristis. 



form vittie 



10.— General color pale, often entirely so or with a broad thoracic space and an 



equally broad sutural space on the elytra fuscous pusilliis. 



Subgenus LITTORIMUS. 

 Metasternum with post-coxal line: epipleurfe with oblique elevated line near the 

 base; stridulating line of first ventral segment entire auroinicans. 



H. gliatllO Lee— Oblong, moderately convex, piceous, clothed with short, 

 semi-'erect brownish hairs, the entire margin fimbriate with longer hairs, elytra 

 with the usual sinuous bands more or less interrupted and with a juxta-scutellar 

 basal spot. Antenna ferruginous. Head densely, finely punctured and opaque. 

 Thorax fully twice as wide as long, sides moderately arcuate, narrower in front 

 in 9 , base arcuate, oblique each side and with a distinct marginal line, disc 

 moderately convex, densely punctulate and with longer pubescence (as also the 

 head) than on the elytra ; color entirely piceous, the anterior angles often yellow. 

 Elytra nearly parallel, disc vaguely substriate, surface densely punctulate, a little 

 more coarsely than ou the thorax, color piceous, with the usual sinuous reddish 

 yellow bands more or less interrupted, a recurrent lunule near the apex, a spot 

 more or less triangular at basal margin on each side of scutellum. Epipleura 

 yellow. Body beneath piceous, more shining and less pubescent than above, 

 anterior angles of thorax, tip of prosternal lobe and sides and apex of abdomen 

 yellow ; abdomen, densely, punctulate. Femora yellow, tibiae and tarsi piceous. 

 Len-^th .16— .22 inch.; 4—5.5 mm. PI. 1. fig. 1. 



Male -Labrum broader than long, the middle third of the apex abruptly pro- 

 longed in a process as long as the body of labrum, the tip emarginate, the upper 

 side carinate. Mandibles slender and long, the post-apical teeth small, without 

 trace of basal lobe ou the outer side. Front slightly retuse. Thorax a little 

 broader than the elytra, sides arcuate, not narrower to the front. 



Female -Labrum broader than long, oval, the middle of apex with two short, 

 obtuse teeth and on each side a slight sinuation. Mandibles shorter and broader 

 than in the male and with the teeth well marked. Front continuous with the 

 labrum. Thorax not broader than the elytra, distinctly narrowed to the front. 



Variations.— The sinuous bands may begin at the lateral margin 

 independently, but many specimens occur with an entire yellow bor- 

 der from base to apex. The bands are variably interrupted, but 

 there is no great difference in this respect. In immature specimens 

 the elytra are nearly as pale as in paUidus; such formed the types of 



the species. 



The male will be easily known by the form of the labrum trom 

 any species in our fauna. The female having the juxta-scutellar 



