Corymbites.~\ SERRICORNIA. 115 



as thorax, scarcely widened behind middle, finely striated, intor>n - 

 very finely punctured and transversely rugoee; under-side black with 

 netallic reflection; legs red. L. 8^-10 mm. 



Male with the antennae and thorax a little longer, and the latter a 

 little less dilated at sides. 



By sweeping bracken, &c. ; occasionally by boating snllowB, &c., iu woods; rare ; 

 Dun* nt li Wood, Hipley, Weybrklge, Wimbledon, Loughton ; New Forest; Somer- 

 set; Swansea. 



C. impreBBus, F. (Diacanthue impressus, Latr.). A large and 

 rather broad species, elytra depressed on disc, black with a very slight 

 bronze reflection, clothed with rather sparing and somewhat uneven 

 whitish pubescence; head thickly and coarsely punctured, impressed, 

 antenna: about as long as head and thorax, obtusely serrate from the 

 fourth joint; thorax slightly longer than broad in male, quadrate and 

 slightly dilated at sides in female, not thickly punctured on disc, but 

 with the punctuation thick and rugose at sides; the central furrow is 

 distinct, at all events at base, and behind the middle on each side of it 

 there are two distinct round fovese; the posterior angles are projecting 

 and carinate; scutellum large, closely punctured ; elytra broad, some- 

 what broadest behind middle, with fine punctured stria 1 , interstices 

 distinctly punctured and transversely rugose ; legs black, occasionally 

 pitchy, rarely ferruginous. L. 11-13 ram. 



On the Scotch fir, and on birch; in mountainous districts; local ; Northumber- 

 land district, on the birch near Gilsland, rare (Bold) ; Scotland, Highlands, Tay, 

 Dee, and Moray districts (Braemar, Avieuiore, &c.) ; Ireland, Churchill, co. Armagh, 

 one specimen on birch. 



C. bipustnlatuB, L. (Diacanthus liptistulatus, Latr.). The 

 smallest of our species ; black, shining, very sparingly pubescent, each 

 elytron with a distinct reddish-yellow spot at base, elytra sometimes 

 entirely reddish-testaceous ; head coarsely punctured, antennae ferrugi- 

 nous, rather short, feebly serrate from the fourth joint ; thorax about as 

 long as broad, rather strongly convex, with sides rounded and con- 

 tracted in front, posterior angles projecting and divaricate but rather 

 short and not carinate ; upper surface finely and not closely punctured ; 

 scutellum large, orbicular; elytra with sides rounded and somewhat 

 dilated behind middle, where they are broadest, with distinct punctured 

 striae, interstices sparingly punctured; legs pitchy brown or reddish 

 with femora darker. L. 6-7 mm. 



In decaying willow, &c. ; also by sweeping ; rare ; Esher and Claygate ; Wrab- 

 nets, Essex; Tonhridge; Abbots Wood ; Sandwich; Hastings; New Forest; Glun- 

 Tilles Wootton ; Killerton Park, Exeter ; Norfolk ; Bagley Wood, Oxon ; Sherwood 

 Foret (Turner). 



The pale variety of this species may be at once known from the 

 v. ochropterus of C. qnercus by its shorter, less parallel-sided, and less 

 closely punctured thorax, and the more rounded sides of elytra, as well 

 as by the shorter antennae, and the fact that the posterior angles of the 

 thorax are not carinate. 



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