114 SERRICOBXU. \Corymlite8. 



C. holosericeus, F. (tessellattts, L., nee F.; Taetotonms lioloseri- 

 &>u$, Kies.). Ratlier broad and depressed, dark brown, thorax and 

 elytra clothed with patches of thick silky yellowish pubescence, which 

 give the upper surface a strongly variegated appearance; head and 

 thorax very thickly punctured, the latter about as long as broad, with 

 sides rounded and narrowed in front, posterior angles carinate, blunt and 

 scarcely prominent; antennae short, obtusely serrate from the fourth 

 joint; elytra with sides rounded, broadest behind middle, finely striated, 

 interstices very finely punctured; legs pitchy red or ferruginous; under- 

 side black or dark pitchy brown. L. 8-9 mm. 



Male with the thorax a little longer and narrower than in female. 



Grassy places, by sweeping, Ac. ; occasionally under stones, on wcfc decaying oak 

 apples, &c. ; rather local, but widely distributed throughout England and Wales; 

 less common further north ; Scotland, rare, Forth district. 



C. eeneus, L. (Diacanthus ceneus, Latr.; Selatosomus, Steph.). One 

 of our most conspicuous species; broad and convex, but with the elytra 

 somewhat depressed on disc, glabrous and very shining; colour varying 

 through a great number of shades, but most commonly aeneous or blight 

 blue; sometimes the head is blue and the elytra aeneous; occasionally 

 violet, greenish, or even bronze-black varieties occur; the colour of the 

 legs also varies from black to clear red; head small, triangular, coarsely 

 punctured and impressed ; antennae rather short, black, obtusely serrate 

 from the fourth joint ; thorax broad and ample, with sides rounded and 

 narrowed in front, central furrow visible behind, posterior angles pro- 

 jecting, strongly keeled, upper surface distinctly but not very closely 

 punctured on disc, more closely at sides; elytra somewhat dilated 

 behind middle, where they are broadest, with fine punctured striae, 

 interstices broad, very finely punctured; the size also is rather variable. 

 L. 10-14 mm. 



Male with the thorax a little longer and less dilated than in female. 



Under stones, especially in mountainous and hilly districts, in early spring ; local ; 

 Belvedere ; Birch Wood ; Fakenham ; common in Devon on high ground, Dart- 

 moor, Drewsteignton, Blackdown, &c. ; Llangollcn, Barmouth, Penmaenmawr, and 

 other Welsh districts; Mulvern Hills (common at the end of April and beginning of 

 May) ; Birmingham district ; Canuock Chase ; Sherwood ; Church Stretton and 

 Withington, Cheshire ; Dunham Park, Manchester ; not recorded by Bold from the 

 Northumberland and Durham district ; Scotland, local, Forth, Tay, and Dee 

 districts. 



C. metallicuB, Payk. (nigricornis, Panz.; Diacanthus metallir.us, 

 Latr.). Elongate, moderately convex, elytra rather depressed on disc, 

 of an obscure aeneous colour, often with a very slight greenish reflection, 

 upper surface clothed with distinct but short yellowish, almost golden 

 pubescence, which is not arranged in patches but evenly distributed ; 

 head strongly punctured, antennae pitchy, rather slender, feebly serrate 

 from the fourth joint inclusive; thorax convex, about as long as broad, 

 with posterior angles projecting and carinate, distinctly and not very 

 thickly punctured on disc, more thickly at sides; elytra about as broad 



