THE CANADIAN ENTOMOLOGIST 191 



scales gradually becoming stout plumose hairs on the ventral 

 surface and along the front margin. 



The elytra are shaped much as in aculeatus, strongly elevated, 

 arcuate and serrate on the basal margin, and narrowly rounded 

 behind as viewed from above; the declivity very strongly oblique, 

 from the side, so that the median line of the elytra is almost evenly 

 broadly arcuate in profile from the middle to the apex; clothed 

 with scales and erect hairs; the striae very narrow, slightly impressed : 

 the strial punctures small and indistinct; the interspaces wide and 

 nearly flat, on the disc slightly convex towards the base; the suture 

 elevated on the caudal two-thirds, and the third interspace con- 

 vex, more strongly on the declivity; the interspaces with uniseriate 

 coarse rugosities, becoming lunar and more numerous at the base 

 and more acute behind; densely clothed with very wide, often 

 subcircular, flattened, plumose scales which become stout plumose 

 hairs at the base, long, conspicuous and usually black on the caudal 

 two-thirds of the sides, very slender near the side margin, becoming 

 very large, erect, widely spatulate scales behind on the disc, longer 

 and densely placed on the first and third interspaces of the declivity, 

 making those interspaces apparently carinate, nearly obsolete on 

 the second declivital interspace; on the disc the vestiture coloured 

 in three yellow-grey bands alternating with three dark subtransverse 

 bands; the first band black, suffused with reddish, basal; the second 

 band pale, wide, from the suture to the side margins, extending 

 irregularly backwards on the side, with the pale section of the 

 first interspace attaining the scutellum, that on the second ex- 

 tended farther behind, that on third nearly obsolete; the second 

 pale band, the fourth from the base, is a subquadrate blotch on 

 the 2nd, 3rd, 4th and 5th interspaces, extended forward on the 

 5th and connected diagonally by scattered pale scales with the 

 base of the first pale band, evidently the remnant of a strongly 

 oblique pale band, surrounded by the 3rd and 5th bands, which 

 are black, and meet on the middle of the side to be extended ir- 

 regularly to the side margins; the third pale band, the sixth from 

 the base, is transverse, apical, with a narrow extension forward 

 on the 4th and 5th interspaces nearly to the 2nd pale band, and 

 connected by scattered pale scales with a caudal extension of the 

 1st pale band on the 8th interspace. 



