176 JOHN L. LECONTE, M. D. 



ending between the front of the eyes : beak strongly impressed transversely at 

 tip; prothorax not longer than wide, gradually narrowed from the base for 

 about three-fifths of its length, then more rapidly to the tip; feebly impressed 

 'on the sides near the apex, densely and confluently rugose, producing a coar- 

 sely granulated surface; base more distinctly bisinuate than usual ; elytra with 

 rows of quadrate punctures, intervals wide, slightly convex, strongly rugous and 

 marked each with a row of small granules, bearing stiff yellow hairs ; basal mar- 

 gin acute, subserrate; antennae and feet nearly black, front tibise finely serrate. 

 Long. 5 mm. 



Two specimens, Oregon, Mr. George Gribbs. This species and H. 

 pinifex are more robust than the others, resembling in form Dendroc- 

 tonus. 



b. — Front transversely impressed. 



9. H. pinifex Fitch, Noxious Ins. N. York. 4th report, p. 43, No. 248. 



Lake Superior, Canada, Ohio. Also stout in form, like a Dendroc- 

 fonus. The front has a curved transverse impression at the base of 

 the beak, which is marked with a short carina, and a transverse apical 

 impression; the thorax is densely covered with punctures of twosizes. 

 and is finely carinated; it is distinctly narrowed in front, with the sides 

 feebly rounded almost to the apex, which is slightly tubulate ; the 

 elytra are deeply striate, the striae marked with quadrate punctures, 

 the intervals broad, convex behind and towards the suture, deeply 

 rugose, each with a row of small tubercles especially obvious behind, 

 bearing short yellow bristles; the basal margin is acute and sub- 

 serrate; the pubescence is short and fine, becoming nearly squamiforui 

 behind, the front tibiae are distinctly, though not coarsely serrate. 

 Long. 5 mm. 



10. H. rugipennis Mannh. Bull. Mosc. 1853, 238.^=IIi/lurgus rug. Mann. ih. 

 1843, 297. 



Alaska, Oregon and California. Resembles II. pinifex, but is nar- 

 rower, the frontal impression is deeper, aud somewhat smooth at the 

 bottom ; the prothorax is more densely and more uniformly punctured, 

 the striae of the elytra are less deep, the intervals are more finely 

 punctured and rugous, but marked in the same way with rows of tu- 

 bercles; the basal margin is acute and subserrate; the front tibiae are 

 moderately toothed near the tip. Long. 4 — -1-5 mm. 



11. H. suboostulatus Mannh. Bull. Moc. 1853, 239. 



The original locality was Alaska, but I refer to this species speci- 

 mens from Oregon and from Taho Valley, California. 



The body is cylindrical, densely clothed with scale-like yellowish- 

 brown hairs, sometimes forming a crust and concealing the sculpture; 



