369 



i. Shoulders prominent; elytra at base considerably 

 broader than tliorax. 



1. Size larger; elytra with the interstices closely and 

 rugosely punctured, comparatively dull, of a bright 



blue colour A. KOX8TBIATA, CSotze. 



(caentlea, Paylc.) 



2. Size smaller ; elytra with the interstices not, or 



scarcely, rugosely punctured, shining, 



A. Thorax iuipnnctate, or at most with very fine 



punctures towards La*e. 



a. Elytra dark blue ; anterior and intermediate 



femora pitchy towards base ( size larger . . A. TEM-'STfi A. A'' . 



{eupkorhirf, All.) 



b. Elytra dark violet ; anterior and intermediate 



femora unicolorous red ; size smaller . . . A. ATRO-C(KRi'i,KA,Stf)>h. 



(<!/ anel la, Kedt.J 



B. Tliorax thickly and very finely punctured i 

 colour greeni>h> more rarely bluish ; anterior 

 and intermediate femora unicolorous redj very 



rarely darker towards base , . A. VIRESCEVS, F^udr. 



(hilaris, Stepb.?) 



ii. Shoulders rounded ; elytra at base not much broader 

 than thorax* 



1. Tliorax distinctly transverse; average size smaller A. ATRATTTII, All. 



2. Thorax hnbquadmte ; average size larger ... A. HKBBIGBADA, Curt. 



A. IntescenB, Gyll. Subovate, moderately convex, shining, of a 

 yellow-testaceous colour, with the head sometimes ferruginous, and the 

 antenna? towards apex, the mouth parts, the apex of posterior femora, 

 and the breast and abdomen black ; occasionally, however, the abdomen 

 is more or less yellow, or entirely yellow ; the suture of the elytra is 

 usually dark in the middle ; antennee gradually thickened towards apex ; 

 thorax short, transverse, with sides distinctly rounded, very finely and 

 obsoletely punctured, punctuation more distinct behind 5 elytra at base 

 considerably broader than thorax, rounded together at apex, with the 

 sutural angles almost acuminate, very finely and thickly punctured; l-gs 

 clear testaceous with the apex of the posterior femora sharply, ahiuptly 

 and not, as a rule, broadly black, a character, that will distinguish it at 

 once from one or two of the other Halticw, which it resembles in general 

 appearance. L. 2-'2\ mm. 



Marshy places; on Cotnamm paliittre, lythrum xalic.aria, AT.; loc;il, but some- 

 times common where it occurs j Snodland (Kent), Eslier, Maidstotio j Henley : 

 U'ickfii Feu; H'llm Hush, Brighton; Portsmouth district j New Forest; Isle 'of 

 Wight, near Brading ; Lee Valley, Devon ; Bretby Wixid, Itt'ptou ; Scotland, \ n \ 

 local, Sol way district; Ireland, near Belfast and Lough Neagh. 



A. nigrricepa, Kedt. Much smaller than the preceding, from \vhi.-h 

 it may further be known by being more convex and of a shoiter oval 

 form, as well as by the black head, the absence of a black patch at the 

 apex of the posterior femora, and the more slender antenna', whirh uiv 

 not so dark towards apex ; the general colour, also, is lighter ; thorax 

 transverse, rufo-tcstaceous, almost smooth ; scutellum black ; elytra pale 



YOL. IV. B b 



