\_Apiun. 



aiui-f-. Antenna) entirely reddish -yellow in the mnle, 

 diirk with the biise reddish-yellow in the female; 



elytra not strongly dilated behind A. EifVi, Kirby. 



bbl'f. Anteunso black in both sexes; elytra strongly 



dilated behind, pear-shaped A. STHIATUM, Marsh. 



ccc. Thorax with an impression or channel distinct at base 



only, and rarelv reaching middle.* 



aaa*. Tarsi with the first joint much longer than the 

 second, as long as or longer than the other 



joints taken together ; legs very long A. VOliAX, Hcrbst. 



bbb*. Tarsi with the first joint shorter than the rest 

 taken together, but considerably longer than the 



second. 



aa;if. Head longer than broad ; eyes oval, less promi- 

 nent A. GYLLENHALI, Kirby. 



bbl>f. Head broader than long ; eyes rounded, more 



prominent A. UNICOLOR, Kirby. 



(af rum, G^ll.) 

 ccc*. Tarsi with the first joint about as long as, or 



slightly longer than, second, 

 aiiuf. Elytra blue or greenish-bine. 

 iiaj. Elytra elongate, size larger; thorax closely 



punctured A. MELILOTI, Kirby. 



bbbj. Elytra not elongate ; size smaller. 



uatia. Punctuation of thorax stronger and less close ; 



pubescence not distinct A. XIVESCERUM, Gyll. 



(reflexum, Gyll.) 

 bbbb. Punctuation of thorax finer and very close ; 



pubescence very distinct A. WAI/TONI, Steph. 



(Curtisi, Boh.) 

 bbbf. Body black or leaden-black. 



waaj. Hind body much dilated, pear-shaped . . . . A. IMMUNE, Kirby. 

 bbbj. Hind body not, or comparatively slightly, di- 

 lated or pear-shaped. 



anaii. Orbits of eyes furnished beneath with a border 

 of white hairs; elytra often with a slight bronze 



reflection A. SIMILE, Kirby. 



bbbb. Orbits of eyes not furnished beneath with a 

 border of white hairs ; elytra without bronze re- 

 flection. 



aaaa*. Scntellum long, rectangular; size large; 

 (insect closely resembling A.meliloti, except in 



colour) A. SCUTELLARE, Kirby. 



bbbb*. Scutelium short, usually rounded or trian- 

 gular. 



tiaaaf. Thorax plainly longer than broad, 

 aaaaj. Thorax distinctly narrowed in front ; 

 elytra somewhat dilated behind ; size 



larger A. LOTI, Kirby. 



bbbbj. Thorax subcylindrical with the sides 

 subparallel ; size small. 





* This character, as a rule, is a very good one, but in one or two species (e.g. 

 A G-ylhnhali, and in the preceding group A. Spe/icei) is somewhat unsatisfactory, 

 18 the impressions and channels sometimes vary in different specimens of the same 

 insect; 1 Ciinuot, however, find a more evident or reliable character on which to 

 separate these groups. 



