OF NORTHUMBERLAND AND DURHAM. 263 



striatis, striis scepius dlstincte punctatis, vitta lata suh- 

 marginali ohsoleta rufo-hrunnea ; antennarum articulo 

 hasali, tibiis tarsisque rufo-testaceis.''^ 

 Jacquelin Duval, Ann. Soc. Ent. France, 1852, 109. 



Var. a. "Supra obscure cyaneuni; elytris concoloribus ; anten- 

 narum articulo hasali, tibiis tarsisque obscure rufo-testa- 

 ceis.'* 

 Bembidium coeruleum, DeJ. Icon., iv,, 398, pi. 216, 3. — Boisd. 

 et Lacord. Fn. Ent. Paris, i., 278. — Heer, Fn. Col. Helv., 

 i., 131. 

 Far. b. '^ Minor; capitetlioraceqiieviridi-cyaneis, elytris obscure 

 cyaneis, concoloribus; antennarum articulo hasali, tibiis 

 tarsisque rujo-testaceis.^'' 

 Peryphus atrocsBruleus, Steph. Illust.,Mand., ii., 17. — Cata- 

 logue, No. 11. — Bembidium cyanescens, Wesmael^ Bull. 

 Acad. Roy. Brux., p. 48, 1835. 

 Var. c. " Supra viridi-ceneum aut viridi-cyaneum, suhdepressum ; 

 thorace subquadrato, 2^ostice minus coarctato, basi rectius 

 truncato, angidis posticis prominulis , elytris olongo-ovatis, 

 concoloribus; antennarum articulo hasali, tibiis tarsisque 

 testaceis.'^ 

 Elapbrus tibialis, Duft. Faun., ii., 209. — Perypbus tibialis, 

 Steph. Illust, Maud., ii., 15. — P. enemerythrus, Steph. 

 Manual, No. 421. — Catalogue, No. 9. 

 M. Jacquelin Duval bas united tbe apparently distinct insects 

 above cited. Taking, as tbe type, B. fasciolatum, Duft., be finds 

 tbe distinct reddisb band of tbe elytra diminisb gradually, till 

 it at lengtb disappears; tbe colour at tbe same time losing its 

 bronzed bue, and becoming more or less blue. It tben forms tbe 

 B. coeruleum, Dej., from wbicb, by cyanescens, Wesm. (atro- 

 coerideus, Stepb.J, be passes on to tibialis, Duft. (tibialis and 

 enemerythrus, Stepb.) ; remarking, tbat tbe form of tbe tborax is 

 of little value, since it is subject to considerable variation. 



Tbe type does not occur in tbis country, but specimens some- 

 wbat approacbing to coeruleum are of occasional occurrence; 

 atrocoeruleus, tbe intermediate variety, and more especially ^i6ia^«5 

 are exceedingly common tbrougbout tbe year. — T. J. B. 



