512 SEEKICOKNJA. 



a. Antennae with the third joint as long as, or longer than, the second. 

 a'. Hind angles of the prothorax carinate *. 

 a". Marginal carina of the prothorax entire -j\ 



a'". Prothorax more or less elongate, considerably longer than broad. 

 a 4 . Prothorax rather sparsely, uniformly pubescent; elytra with lines 

 or stripes of paler pubescence. 

 a". Elytra with more or less distinct alternate lines of light and dark 

 pubescence. 

 a 6 . Prothorax rufous, with deep basal incisures and long, acute 



hind angles ; punctuation sparse sublineatus. 



b 6 . Prothorax black, feebly incised at the base, and with shorter 



hind angles ; punctuation close lineipennis. 



b 5 . Elytra with the suture and a narrow submarginal vitta cinereo- 



pubescent ; not vittate hilaris. I/ 



c 5 . Elytra with the suture and a broad discoidal vitta yellowish- 

 cinereous pubescent; vittate virgatus. ^ 



b\ Prothorax thickly pubescent, with two large blackish-pubescent 



marks on the anterior part of the disc % ; the elytra with the 



suture and a submarginal vitta cinereo- or yellowish-pubescent . pulcherrimus. *""' 



c\ Prothorax and elytra densely, uniformly pubescent (the elytra 



sometimes with a narrow darker vitta on the disc in A. fulvescens) . 



d 5 . Elytra moderately elongate. 



c e . Elytra rather coarsely punctate-striate fulvescens. 



d 6 . Elytra very finely punctate-striate castaneipennis. 



e 5 . Elytra very elongate pexus. 



d\ Prothorax densely pubescent, with two broad black vittse on the 

 disc clothed with fuscous or blackish hairs ; the elytra with the 

 suture and a narrow submarginal stripe cinereo- pubescent . . . taniatus. 1/ 

 e\ Prothorax and elytra rather sparsely, uniformly pubescent. 



f°. Black, the metasternum and abdomen ferruginous bicolor. 



g°. Black, the prothorax and propleurae rufous; the pubescence 



above and beneath partaking of the ground-colour .... miniatocollis. 

 h 5 . Black, the prothorax and propleurae sometimes obscure rufous ; 



the pubescence of the under surface yellowish- white .... pectoralis. 

 b'". Prothorax transverse or not longer than broad (slightly longer in 

 A. binotatus). 

 /*. Body fusiform. 



i°. Elytra not vittate, uniformly pubescent ; hind angles of the pro- 

 thorax very long, acute, and divergent acutus. 



> Very finely or indistinctly in A. fulvescens, A. tamiatus, A. amabilis, A. scapular is, A. quadrivhtatm, and 

 A. trilineatus. 



t Interrupted at the middle in some specimens of A. hilaris, A. pulcherrimus, A. fulvescens, A. pexus, 

 A. tceniatus, and A. amabilis. 

 X Indistinct in var. /3. 



