GALERUCID^. THYAMIS. 30T 



hazels, during the summer. " Common, particularly in woods about 

 Swansea." — L. IV. Dillwi/n, Esq. " Bottisham." — Rev. L. Jenyns. 



Sp. 41. indigacea. Oblongo-ovata, nigro-cyanea, supra atro-purpurea, elytris 



subtilissims punctatis,antennis atris. (Long. corp. 3 lin.) 

 Ha. indigacea. Illigerf—Steph. Catal. 219. No. 2243. 



Oblong, bbie-hJack, above deep-purple and shining : thorax with the posterior 

 channel abbreviated : elytra vexyjinely punctulated, and less shining than the 

 thorax : antennas black. 



Less frequent than the last; found near London, and in Devon- 

 shire. 



Sp. 42. Erucae. Oblonga, ovata, carulea, nitida, antennis solis nigris. (Long. 



Corp. 9,1 — 2^ lin.) 

 Ga. Erucse. Fa bricius.— Ha. Erucse. Steph. Catal. 219. No. 2244. 



Oblong-ovate, above glabrous, glossy blue; the elytra obsoletely punctured: 

 body beneath greenish blue : legs violaceous : antenna? black. 



Not so abundant as the last species but one, but nevertheless not 

 uncommon in the vicinity of London, and in the New Forest. 

 " Sometimes plentiful near Swansea." — L. W. Dilhoyu, Esq. 



Genus CCCXCVIL— Thyamis miU. 



AntenncB shorter than the body, slender ; the basal joint stoutest and curved ; 

 second and third joints abbreviated, of equal length ; three following, elongate, 

 slender; the remainder stouter, shorter, and pubescent : head small, triangular, 

 not concealed beneath the anterior margin of the thorax: e^/e* prominent : 

 thorax short, subtransverse, and slightly cylindric, smooth, without a trans- 

 verse impression ; elytra convex, ample, slightly dilated behind, and often 

 rather shorter than the abdomen, generally punctate, or nearly smooth : body 

 more or less elongate} anterior and intermediate Jt-raora slender; posterior 

 greatly incrassated: tibias simple, not dentate; posterior longest, slightly 

 curved, the apex obliquely truncate, and terminating in a simple spine : the 

 tarsi, of which the basal joint is very long, inserted at the apex. 



Exclusively of the dissimilarity in the proportion of the joints of 

 the antennae, Thyamis differs from the preceding and following 

 genera, by having the thorax comparatively slender, the elytra 

 very convex, the posterior tarsi with the basal joint very long and 

 slender, and inserted at the apex of the tibise, which are obliquely 

 truncate : — the species are generally of pale hue, and are very 



