GALERUCm^. — 6ALEUUCA. 287 



Ch. halensis. Linne.—Martyn, C. jjI. 15. /. 20.— Ad. halensis. Steph. Catal. 



211. No. 2134. 

 Head green; forehead testaceous : eyes black: thorax yellow, unequal, with two 



impressed dots : elytra light grassy green, with a gold tinge, very thickly 



punctured : legs testaceous : tarsi fuscescent : antennse also fuscescent. 

 The elytra are variable in colour; being bright golden-green, blue-green, or 



nearly bright-blue. 



Very abundant within the metropolitan district, at times, espe- 

 cially in the autumnal months ; I have taken it in profusion on the 

 borders of a wood near Hertford, at the end of September, and 

 occasionally about July and August. " On Rosa spinossissima, 

 sea-shore, Marsden, in profusion." — G. Wailes, Esq. " Balh, 

 Monk's-wood, and Dawlish, Devonshire." — C. C. Bahingtoii, Ebq. 

 " Swansea." — L. W. Dillwyn, Esq. 



Genus CCCXCIII. — Galeruca, Geoffroy. 



AntenruE shorter than the body, filiform, the joints short, somewhat obconic, the 

 basal one longest, subclavate, second about half the length of the third, which 

 last is nearly equal to the fourth, the remainder subequal, or slightly de- 

 creasing in length to the apex, the terminal joint being longest. Palpi short, 

 the apical joint obconic: head small, deeply inserted in the thorax, narrowed 

 towards the mouth : eyes slightly prominent : thorax transverse, broad at the 

 base, generally unequal and impressed : elytra ample, ovate or elliptical : 

 legs short : femora alike, rather stout, the posterior not incrassated : tibics 

 simple, ciliated : tarsi broad, rather shor^. 



Galeruca, in common with Auchenia, has the second joint of the 

 antennse only about half the length of the third, but in Galeruca the 

 articulations are abbreviated and somewhat obconic : the palpi are 

 of dissimilar proportions, and the structure of the thorax is also 

 unlike, the surface being in general deeply foveated and unequal ; 

 the species are usually of plain colours, and reside in damp, marshy 

 situations : they vary slightly in the form of their body, and may, 

 consequently, be divided into sections. 



A. With the body ovate. 



Sp. 1. Tanaceti. Nigra, immaculata, supra confertissime profunde rugoso- 

 punctata, elytris obsolete elevato-lineatis. (Long. corp. 4— 5f lin.) 



Ch. Tanaceti. Linne.—Ga,. Tanaceti. Samouelle, pi. 2.f. 13.— Steph. Catal. 21 L 

 No. 2135. 



Mandibulata. Vol. IV. 31st Dec. 1831. u 



