18 Mr. J. Walton on the genera 



Elytra oblong, with the shoulders rounded, convex above, punc- 

 tate-striate, the interstices rather convex, minutely granulated ; 

 the abdomen black, sparingly clothed with fine short hairs, but 

 without scales. Legs moderate, pallid testaceous, pubescent; 

 femora clavate. Length 2 — 2^ lines. 



This insect is dissimilar in its habits from the preceding ; it is 

 generally less, more slender, the scales more brilliant, the hairs^ 

 on the body paler, and the abdomen without scales ; the shape of 

 the head is very different, being shorter and narrower at the base, 

 the vertex transversely elevated and very distinctly carinated on 

 both sides ; the thorax also differs, but the above characters are 

 sufficient to distinguish it from its congeners. 



In many cabinets, but referred to P. flavipes. 



Not very common, but occasionally found rather plentiful in 

 woods on the birch, hazel, and other trees in June. 



5. Polydrosus sericem, Schall., Gyll., Schonh. 



— splendidus, Herbst. 



— squamosus, Germ. 



— speciosus, Staph., Curt. 



I possess foreign specimens of this beautiful insect from Ger- 

 mar, with the name " Polydrosus sericeus of Schaller.'' 



It was discovered by the Rev. G. T. Uudd in a wood near 

 Kimpton, Hants, in June, and as far as I know, has not hitherto 

 been found in any other locality ; it appears to be extremely local. 



§ B. Femora dentate. 



6. P. planifrons (Dej. Cat.), Schonh. 



— argentatus, Oliv. 



Oblong, black, densely clothed throughout (except the tarsi 

 and antennae) with rich green scales, the upper surface without 

 hairs. Head rather large, subquadrate, closely punctulated, the 

 frons more or less depressed, with a deep fovea in the middle ; 

 rostrum a little shorter and narrower than the head, the apex 

 triangularly emarginated. Antennae reaching to the base of the 

 thorax, slender, the joints rufous or testaceous, with their apices 

 piceous and the clava fuscous. Thorax short, transverse, a little 

 narrowed and slightly constricted anteriorly, the sides moderately 

 dilated and rounded, and nearly plane above. Elytra with the 

 shoulders elevated, subrectangular, convex above, punctate-stri- 

 ate, the interstices broad and flat, and transversely strigated. 

 Legs rather stout ; the femora and tibiae black, the former den- 

 ticulated ; the tarsi rufous. Length 3 lines. 



There is a specimen of this insect in the cabinet of the British 

 Museum, but I cannot learn where it was taken. I possess 

 foreign examples from Chevrolat. 



