LeConte. 



HYLOBnNI. 143 



Lake Superior to Georgia. I can see no reason for considering the two 

 names to represent distinct species, as lias been done by Gemminger and 

 Harold, and by Crotch. 



2. P. costatus Mann., Bull. Mosc. 1852, ii, 363. 



Alaska and Oregon. A beautifully preserved specimen from California, 

 which I refer to this species on account of its form and sculpture, has the 

 sides of the prothorax clothed with snow-white scales, and the posterior 

 band of the elytra very broad, becoming white towards the suture, just as 

 in the preceding species. In the other species the scales seem to be all yel- 

 low, and the markings much smaller. 



3. P. fasciatus, n. sp. 



Blackish-brown, thinly sprinkled with yellowish hairs and small scales ; 

 beak strongly punctured, slender, not carinate ; prothorax not wider than 

 long, gradually narrowed in front, broadly rounded on the sides, distinctly 

 broadly constricted at tip, hind angles rectangular ; disc densely and con- 

 fluently punctured, obsoletely carinate, sides clothed with yellow scales, 

 narrow dorsal line and four small spots in the usual position yellowish ; 

 elytra with a broad band before and another behind the middle yellowish, 

 the latter whitish towards the suture ; inner strise deeply and irregularly 

 punctured, outer ones less distinct, interspaces densely rugosely punctured, 

 third and fifth slightly prominent. Length 7-9 mm. ; .28-. 35 inch. 



Two specimens, Oregon. Seems to differ from P. strobi chiefly by the 

 thorax being longer, less coarsely punctured, and less rounded on the sides; 

 by the beak being somewhat stouter, and by the elytral bands more trans- 

 verse and less oblique towards the sides. 



4. P. afflnis Randall, Bost. Journ. Nat. Hist, ii, 24. 



Lake Superior, Canada, and New Hampshire. Distinct from the pre- 

 ceding species by the prothorax narrower, and less constricted in front ; 

 from the two following species by the hind angles being rectangular. The 

 disc of the prothorax is coarsely and somewhat rugosely punctured, much 

 as in P. costatus, but the strise are composed of larger punctures, and the 

 interspaces are quite flat. The scales are all cream color, and the posterior 

 band is narrow and imperfect. 



5. P. dubius Randall, Bost. Journ. Nat. Hist, ii, 24. 



Same range as the preceding, from the smallest specimens of which it 

 differs chiefly by the sides of the prothorax converging a little near the 

 hind angles, which thus become somewhat obtuse. There is also some 

 difference in the scales on the elytra, which in well-preserved specimens 

 are more diffused, with the markings less defined. 



6. P. rotundatus, n. sp. 



This species quite resembles in size and form P. dubius, except that the 

 sides of the prothorax are more rounded behind, so that the basal angles 

 become still more obtuse and rounded. The prothorax is more densely 

 punctured, and the alternate interspaces of the elytra are slightly elevated; 



