Atln>U#.] UICORVIA. 99 



with the, antennae longer and the thorax oblong; in the female 

 the antennae are shorter and the thorax quadrate. 



By beating and sweeping ; in woods &c. ; as a rale not very abundant, but rather 

 common and generally distributed throughout tbe kingdom as far iiurth us the 

 Moray district of Scotland. 



A. undulatus, De Gr. (trifasciatus, Herbst. ; v. lifaficiatu8 t Gy\l.). 

 The most conspicuous of our species, and one of the rarest of our indi- 

 genous Coleoptera ; elongate, subparallel, elytra somewhat depressed 

 on disc, head and thorax dull black, elytra brown with very distinct 

 waved bands of greyish pubescence ; the colour, however, is somewhat 

 variable, the basal part of the elytra being sometimes considerably 

 lighter than the apical portion, and more or less rufous ; head thickly 

 punctured, forehead scarcely impressed, antennae black, moderately 

 long, serrate, with the second joint very small, and the apex of last 

 joint contracted and conical ; thorax longer than broad, rather convex, 

 narrowed in front, and strongly sinuate before posterior angles which 

 are much produced and divaricate, upper surface very thickly and 

 rugosely punctured, with traces of a smooth central line in centre or 

 channelled ; elytra with distinct punctured strise, interstices finely 

 punctured ; legs black, with claws reddish. L. 12-15 mm. 



Male with the antennae considerably longer than in female ; according 

 to Thomson the elytra of the male have the base and a waved central 

 band clothed with thick greyish pubescence, whereas in the female 

 they are entirely pubescent, with two wavy denuded bands, one before 

 and the other a little behind middle ; in a female specimen, however, 

 which I have before me, there are three plain denuded bands on the 

 elytra. 



Very rare ; taken in small numbers by Turner at Rannoch, Tay district, Scotland ; 

 it appears to be a highland or mountain species. 



A. longricollis, 01. ( ? crassicollis, Lac.). Elongate, dull, clothed 

 with greyish pubescence ; head and thorax very thickly punctured, 

 black, with the sides and posterior angles of the latter often more or 

 less yellowish-brown ; elytra yellowish-brown, with suture and side 

 margins more or less distinctly darker, sometimes unicolorous, with 

 punctured striae, interstices finely and more or less rugosely punctuml ; 

 under-side dark, with abdomen lighter, but variable ; legs testaceous, 

 with fi'inora often infuscate ; the thorax in both sexes is more or less 

 distinctly channelled ; this is often used as a character to distinguish it 

 from several allied species, but is not dependable, as the central thoracic 

 channel is often traceable in certain specimens belonging to species that 

 are usually regarded as not possessing it. L. 8-9 mm. 



Male very different from female, with the body longer, more narrow 

 and parallel and more depressed, the thorax narrow and rectangular, 

 the antennae very long, and the elytra ni'-r.' parallel sided, with the 

 stri;i- and punctuation of interstices slightly stronger. 



ii 2 



