286 MANDIBULATA. — COLEOPTERA. 



Not very common ; found in marshy places in various parts of the 

 country : near London it has been taken at the end of June, and it 

 has occurred near Bristol at the same period. " On Scutellaria 

 galericulata about the borders of Crwmlyn-bog and elsewhere, not 

 at all uncommon." — L. W. DiUzoi/n, Esq. " Monk's-wood." — C. C. 

 Babington, Esq. " Battersea-fields.'" — Mr. Raddon. " Plaistow- 

 marshes and banks of the Paddington-canal." — A. Cooper, Esq. 



Genus CCCXCII. — Adimonia, Schranh. 



Antennce rather short in both sexes^ about half the length of the body in the 

 males, filiform, basal joint longest, a little incrassated ; second and third 

 joint short, of nearly equal length; fourth almost as long as the first ; the re- 

 mainder shorter than the fourth, elongate-obconic, with the terminal joint 

 acute. Pa/p2 short, the apical joint conical: /aZ>rw7?z emarginate anteriorly: 

 head small, rounded: e^es slightly prominent: thorax transverse, broader 

 behind than before, the hinder angles prominent: scutellum small: elytra 

 rather broader at the base than that of the thorax, considerably dilated behind 

 the middle, the apex with the inner angle acute: legs rather long: Jemora 

 alike, pasterior not thickened: tihioe simple: tarsi ^oxt. 



In Adimonia the second and third joints of the antennae are ab- 

 breviated and of equal length, whereas in Auchenia the second 

 joint alone is shortened ; the antennae are also stouter in the first 

 genus ; the thorax is of dissimilar form, and the elytra broader, espe- 

 cially behind, with the apex not rounded on its inner margin. 



Sp. 1. Alni. Plate xxii. f. 6. Caeruleo-violacea, nitida, elytris rufescenti- 

 violaceis, confertissime vage punctulatis antennis, tibiis tarsisque nigris. (Long, 

 corp. 3 — 4 lin.) 



Ch. Alni. Linne.— KAi. Alni. Steph. Catal. 211. No. 2133. 



Violet-blue, shining : head thickly rogose-punctate, with a deep frontal impres- 

 sion : thorax finely punctured : elytra reddish- violet, thickly and irregularly 

 punctured : body beneath blue-black, shining, slightly punctured : femora 

 violet-blue : antennce, tibics, and tarsi dull black. 



The colour above is sometimes bluish, and a little tinted with green. 



Very rare in this country : it has been once taken in the vicinity 

 of London, but I have formerly obtained several specimens from 

 near Exeter, where they were captured in June. 



Sp. 2. halensis. Flava, capita elytrisque aurato-viridibus, antennis tarsisque fus- 

 cescentibus. (Long. corp. 2—3^ lin.) 



