"3 



elytra embrowned with a yellowish tint from lutose scales, anteriorly [23;] 

 with three obtuse ridges r tl;e interior one very short ; the intermediate 

 one discoidal. abbreviated at each end ; and the exterior one reaching 

 from the base to the ai)i(al tubercles, of which there are two much 

 elevated, the interior one bcin;' the larcjest and hi^jjhcst ; in the interstices 

 there are four rows of deep impressions : the sides ot the antepectus are 

 verrucose ; the abdomen is black-brov/n with lutose sides ; the disk is 

 longitudinally, densely, and thickly wrinkleJ, '•nd the sides are verrucose; 

 legs black-brown. 



This species differs from the preceding one in the form of the thorax 

 and the clava of the antennae, and ought perhaps to/crm a subgenus. 

 [Belongs to Nosoderma Esch. : rather rare in Canada.] 



F.\MILV HKLOPIDit:. 



Genus Meracantha Kirby. — Labnim transverse, scarcely cmarginate ; 

 labium subtriangiilar, longitudinally and obtusely ridged in the middle 

 with a deep impression on each side , mandibles bidentate ? at the apex ; 

 maxillse mutilated ; maxillary palpi first joint minute : second longer than 

 the rest, clavate ; third obconical ; fourth very large, securiform ; labial 

 palpi broken off; mentum trapazoidal ; antennae filiform, scape incras- 

 sated ; pedicel obconical ; third joint longer than the rest, subcylindrical, 

 a little incrassated at the apex ; fourth shorter than the fifth, subobconical ; 

 fifth longer than the subsequent ones, elongate, obconical ; 6 — 10 

 obconical, gradually decreasing in length, and the 9th and 10th in thick- 

 ness ; nth ovate acute. 



Body ovate, convex, apterous. Head triangular ; front elevated on 

 each side at the eyes protecting the base of the antennae ; eyes large, 

 lateral, internally emarginate. Prothorax rather wider than long, narrowest 

 anteriorly, subquadrangular ; margined on the sides and anteriorly, margin 

 very slender. Scutellum an obtiisangled triangle. Elytra with the 

 epipleura narrow, falciform ; shoulders incrassated, armed with a tooth ; 

 calcaria very short and scarcely visible. 



[238.] 323. Meracantha canadensis A7r^^.— Length of body 6 

 lines. Taken in Canada by Dr. Bigsby. 



Body black-bronzed, naked, glossy, punctured : on the upper side of 

 the body the colour is more metallic. Head and prothorax confluently 

 punctured, two last joints of the antennae pale from hairs ; elytra slightly 

 furrowed, the sutural and the marginal furrows meeting at the apex and 



