CURCULIONID^. — POLYDRUSUS. 141 



the anterior edge : elytra not very deeply punctate-striate, the suture luith a 

 broad pale, common streak : legs deep black, with a pitchy tinge, especially 

 on the tibiae and tarsi, clothed with a fuscescent pubescence : antennae similar: 

 anterior femora rather stouter than the rest. 



Frequent in sand and gravel pits near London, especially at 

 Hampstead and on Wimbledon-common. " Common on Crwmlyn- 

 burrows,'"' — L. W. Dillwyn, Esq. 



Genus CCCXXVIII. — Polydrusus, Germar. 



AntenncE geniculated, 12-jointed, rather long and slender, the scape clavate, 

 sometimes extending beyond the eyes; the two basal joints of the funiculus 

 elongate, obconic ; the others variable, sometimes very short and obconic, at 

 others nodose ; club ovate, acuminate, 4-articulate. Rostrum short, rather 

 thick, slightly rounded, narrower than the head; antennal groove linear, 

 curved, united beneath : eyes rounded, slightly prominent : thorax small, 

 short, truncate anteriorly and posteriorly : elytra convex above, especially be- 

 hind, the shoulders obtusely angulated : legs moderate ryemoT-a sometimes with 

 an obtuse tooth, or unarmed : tibicB with the apex unarmed, of the posterior 

 dilated. 



Polydrusus differs from the foregoing genera by having the body 

 more densely clothed with scales, and elongate or oblong ; and by 

 having the second and third joints of the antennae nearly of equal 

 length : — the species are all furnished with wings and inhabit 

 trees ; they differ slightly in habit, but are evidently dissimilar to 

 the Phyllobii and Nemoici, with which genera they have recently 

 been reunited. 



A. With the femora dentate. 



Sp. 1. amaurus. Niger, squamulis glauco-argenteis undique tectus, antennis pedi- 

 husque testaceis,femorum clavd nigricante, posticorum dentate. (Long. corp. 

 2i lin.) 



Cu. amaurus. Marsham.—Po. amaurus. Steph. Catal. 178. No. 1828. 



Black, clothed throughout luith ^&\\.co\xs-silvery scales : thorax convex, rather 

 deeply punctate- rugose: elytra very convex, especially behind, moderately 

 punctate-striate, the interstices flat, nearly smooth : body black beneath, with 

 the apex obscure testaceous: legs elongate, dull testaceous, with whitish 

 pubescence: femora clavate, the clava black, or fuscous; and of the posterior 

 femora, armed with an obtuse stout tooth : antennae rufo-testaceous, with the 

 club dusky. 



