NORTHUMBERLAND AND DURHAM. 



245 



"Twizell."— P. J. Selhy, Esq. Among grass, by the side of 

 the Derwent, above Winlaton Mill.—/. //. One specimen, above 

 Gibside.— r. J. B. 



This is much larger, and is differently shaped from Haltica 

 Riibi, of which Gyllenhal cites it as a variety. 



336. Plectroscelis, Chevrolat. 

 SuB-G. Mantura, Stephens, 



1. P. SEMI^NEA, Fah. 



Mantura semisenea, Stepli. Illust., Mand., iv., 323. 



Var. Concolor, Hardy MSS. Deep bluish green, the apex of 

 the elytra slightly piceous, legs and antennas black, the tibiae 

 scarcely piceous at the base, 



" Twizell."— P. J. Selb7j, Esq. Whitley and Gosforth.— 1'. J. 

 B. On the curled dock (Rumex crisjnts), above Dunston, where 

 a single individual of the variety occurred. — J. H, August. 



2. P. Chrysanthemi, Ent. H. 



Mantura Chrysanthemi, Steph. Illust., Mand., iv., 324. — M. 

 senea, lb. I.e. 

 "Twizell."— P. J. Selhy, Esq. 



SuB-G. Ch.etocnema, Steiihens, 



3. P. ARIDELLA. Ent. H. 



Chsetocnema aridella, Steph. Illust., Mand., iv., 326. 

 One specimen at Wooler Haugh. — J. H. July. 



4. P. coNciNNA, Marsh. 



Chi:etocnema concinna, Steph. Illust., Mand., iv., 327. — 

 Haltica dentipes, Gyll. Ins. Suec, iii., 573. 

 Common. 



It frequents various plants, but appears to prefer the Polygonece, 

 especially the dock, rhubarb, and climbing buck-wheat. In spring, 

 it occasionally attacks the cotyledons of the turnip. 



337. Sph^roderma, Stephens. 



1. S. TESTACEUM, Fah. 



Steph. Illust., Mand., iv., 328. 

 On thistles and knapweed; common. 



VOL. II. PT. II. 2 H 



