BRITISH CHRYSIDIDJE. 169 



B. Marginal cell open at its apex. 



Sp. 12. Chr. neglecta. 



Closely punctured : head, thorax, basal joints of the antennae, and 

 legs, excepting the tarsi, which are black, of a dull blue or green, 

 or variously intermingled, and occasionally splashed with gold : 

 wings subfuscous ; nervures piceous : abdomen edentate at its 

 extremity, very minutely punctured, of an opaque carmine colour, 

 with a slight longitudinal elevation in the centre of its second 

 segment. (Length, 3 — 3| lines.) 



This common and very distinct species appears to be unde- 

 scribed; it may probably have been intermixed, or mistaken 

 on the continent for the Chr. Austriaca, from which it con- 

 siderably differs, not only in size, (for it is never more than 

 half the size of that species,) but by its open marginal cell, and 

 its very opaque abdomen. In British cabinets and catalogues* 

 it has hitherto stood as the Chr. ntfa of Panzer, which, 

 however, is the Hedychrum roseum of Illiger's Rossi. It 

 frequents sandy situations, and is very abundant, with the 

 Chr. Indent at a, at Highgate. 



Genus III. — Euchrceus, Latr. 



Head transverse, as wide as the base of the prothorax : thorax 

 truncated anteriorly and posteriorly, with an acute tooth on each 

 side of the metathorax, placed low : abdomen very convex above, 

 consisting of three segments, the terminal segment having an 

 elevated transverse ridge just before its apex, which is multi- 

 dentate : superior wings with an incomplete marginal and first 

 apical cell, and complete first and second discoidal cells ; the 

 radial nervure obtusely angulated, and that, as well as the subdis- 

 coidal nervure, gradually terminating before reaching the extre- 

 mity of the wing : legs moderate. 



Sp. 1. Euch. quadratus. Leach, MSS. 



Euch. sexdentata . Latr. Nouv. Diet. T. X. 529. (without 



his synonymes.) 

 Chrysis festiva? . Fab. Piez. 171. 3. 



Entirely of a rich, refulgent, metallic green or blue : the flagellum of 

 the antennas black : the femorse and tibiae of a golden green : the 



