18 i AMI: i.i i ri> UN i. \. \_Aj>/i,/iu*. 



second interstice of elytra situated in 



middle (A. MELANOSTICTUS, Schmidt.') 



b. Mesosternum not carinate between inter- 

 mediate coxae. 



a*. Thorax finely bordered at sides ; inter- 

 mediate coxae placed nearer together, 

 af. Legs pitchy black or pitchy ; elytra 



yellow with conspicuous black markings A. TEHSUI.ATCS, Payk. 

 bf. Legs more or less testaceous or 



yellowish. 



it*. Elytra yellowish with distinct black 

 markings; prominences on forehead 



distinct at least in male. 

 *. Palpi black or dark brown, some- 

 times lighter at base A. CON8PPBCAT08, L. 



*. Palpi reddish or reddish-yellow . A. STIOTIODS, Pan*, 

 bj. Elytra of a livid colour with sides 

 sometimes furnished with a darker 

 band, often with apex and margins 

 towards apex lighter ; prominences on 



forehead obsolete A. CONSPOrcs, Cr. 



b*. Thorax rather strongly bordered at sides ; 



intermediate coxae placed further apart. 



af . Posterior angles of thorax obtuse, well 



marked. 



aj. Size smaller ; male with the apical 

 spines of anterior tibiae pointed at 

 apex ; thorax, as a rule, more dis- 

 tinctly punctured A.PUNCTATO-SULCATU8, Sturm. 



bj. Size larger; male with the apical 

 spines of anterior tibiae blunt at apex ; 

 thorax, as a rule, less punctured, often 



almost smooth A. PRODEOMUS, Brahm. 



bf. Posterior angles of thorax rounded, 

 aj. Sides of thorax fringed with long 



hairs A. CONTAMINATES, Herbtt. 



bj. Sides of thorax without hairs . . A. OBLITERATCS, Panz. 

 2. Base of thorax not bordered except at most near 

 po-terior angles. 



A. Size smaller; head with prominences distinct A. ZENKERI, Germ. 



B. Size larger ; head without or with very obsolete 



prominences. 



a. Thorax closely and distinctly and mode- 

 rately strongly punctured ; apex of elytra 



finely pubescent A. LUBiDUa, /'. 



b. Thorax rather finely or extremely finely 



punctured ; apex of elytra not pubescent, 

 a*. Elytra much longer in proportion to 



thorax ; form subcylindrical, convex ; 



thorax almost smooth ; length 10-12 mm. A. BUFIPES, L. 

 b*. Elytra shorter in proportion to thorax ; 



upper surface depressed ; thorax finely but 



distinctly punctured ; length 6-9 mm. . A. UEPBHSSPS, Kug. 



A. erraticua, L. (Colobopterus erraticm, Muls.). Broad, depressed, 

 black with the elytra of a dirty- yellow colour, sometimes with more or 

 less obscure cloudy dark bands at sides ; head thickly and finely punc- 



