APHTHONA. 281 



a. Shoulders prominent. 



I* Length 1 — 1| lines. 



1, Front pairs of femora entirely red-yellow ; pos- 

 terior femora blackish at apex only. 



Oblong. Upper-side blue, shiny ; under-side black ; first 

 live joints of antennae red-yellow, rest brown-black ; legs 

 (except apex of posterior femora) red-yellow. Thorax 

 scarcely visibly punctured ; elytra finely, confusedly punc- 

 tured, interstices somewhat wrinkled, sutural apical angle 

 almost a right angle, under-side indistinctly punctured. L. 

 1 — 1^ 1. Common. A. coerulea, Payk. 



2* Front pairs of femora red-yellow, with a pitch- 

 brown spot in middle ; posterior femora entirely 

 pitch-brown. 



Ovate. Head black ; thorax and elytra violet-black ; 

 under-side black ; antennae red-yellow, apex brown ; tibiae 

 and tarsi red-yellow. Thorax impunctate; elytra very 

 finely, confusedly punctured, sutural apical angle almost a 

 right angle. L. 1 — 1^ 1. Rather common. 



A. venustula, Kuts. 

 II. Length | — | line. 



1, Sides of thorax scarcely visibly punctured. 



Short reversed ovate. Upper-side dark blue ; under-side 

 black ; first five joints of antennae red-yellow, rest dark 

 brown ; legs yellow-red, posterior femora often brown. 

 Thorax scarcely visibly punctured ; elytra rather strongly 

 punctured, in irregular rows at base, confusedly behind 

 middle ; under-side strongly punctured. L. | — | 1. Com- 

 mon. A. cyanella, Redt. 



2, Sides of thorax distinctly punctured. 



Ovate. Upper-side bronze-green, elytra varying to bluish- 

 black ; under-side bronze-black ; antennae red-yellow at 

 base, last five joints brown ; legs red-yellow, posterior 

 femora often red-brown. Punctuation of thorax scarcely 

 visible on disc ; elytra distinctly punctured, with an ad- 

 mixture of wrinkles, sutural apical angle obtuse. L. f 1. 

 Moderately common. A. hilaris, Steph, 



6. Shoulders rounded. 



I, Thorax nearly twice as broad as long ; punctuation 

 very fine. 



