A. REVTSTON OP THE BRITISH SPKCIES OP BAGOUS, 3CH(5\. 151 



The number of joints in the funiculus of the antenuiB has been 

 variously stated by authors. The antennae are eleven -jointed in all the 

 species, and the confusion in the number of joints in the funiculus has 

 arisen from some observers considering the 7th joint as part of the 

 club. It appears to me that this is the best way to regard it, since it 

 is pubescent and much broader than the preceding joints. B. petro, 

 however, is an exception with a plainly seven-jointed funiculus. 

 These beetles are very often coated with an earthy crust which obscures 

 the striae and markings, rendering their determination more difficult, 

 but ari/illaci'iis is very rarely thus disfigured. 



It is not my intention to go deeply into the synonymy, my refer- 

 ences are confined to the worlds cited in my list. The names given 

 in the table are those of the last European Catalogue (1891). For the 

 reasons before given I believe it to be impossible to substantiate 

 Herbst's names, but it is better to allow these to remain as they are 

 in general use, since nothing is more mischievous than continual 

 changes in nomenclature. Localities are given of those insects only 

 which have been examined by me, except in one or two instances which 

 are noted in the text. 



Table or the Species. 



1. Club of antennas with first joint glabrous. 



Club indistinctly articulated and as long as the following joints 

 united ; thorax, very short, broad, enlai'ged and rounded behind 

 apical constriction ; elytra short and broad, strongly punctured ; 

 callosity near apex of tifth interstice absent. 



B. 2>etro, Herbst (HelvniitlimorpJitt!! Auhei, Cussac). 

 — Club of antennte pubescent from base. 2. 



2. Antennse inserted near basal third of rostrum. 



Form, long and cylindrical; thorax nearly as broad as elytra, the 

 latter without callosities ; hind tarsi as long as tibiae. 



B. (Lypriis) cyliiidrua, Payk. 

 — Antennse not inserted near basal third of rostrum. 



Usually inserted near apex, more rarely in middle. 3. 



3. Elytra with a small shiny prominence at base of first interstice on each 



side of scutellum. 



Elytra with strong tubercles near apical third of both 3rd and 

 •5th interstices. 



B. hiriodiilux, Herbst. 

 — Elytra without scutellary prominences. 



Tubercle on 3rd interstice wanting. 4, 



4. Integuments shiny like varnish. 



Elytra very feebly punctured with tubercles obsolete ; size rather 

 large (3|nim. to 4^nmi.). 



/)'. orpilloreug, Gyll. 

 — Integuments not shiny. 



Elytral tubercles more or less marked. 5. 



6. Size large (4mm. to 5mm.), with well marked tubercle on the oth inter- 

 stice. 



B. yiodulosus, Gyll. 

 — Size small (2mm. to 4mm.); tubercle reduced to a callosity or even 



wanting. ' 6. 



6. 3rd joint of tarsi not bilobed, as narrow as 2nd joint. 7. 

 — 3rd joint of tarsi more or less bilobed, always much broader than 2nd 



joint. 13. 



7. 2nd and 3rd joints of posterior tarsi distinctly longer than broad. 



Tibiae not flattened and dilated near the basal half ; tarsi moder- 

 ately long. 8. 

 — 2nd and 3rd joints of posterior tarsi subequal, as broad as long. 



Tibiae flattened and dilated near the ba.-al half ; legs short and 

 thick ; tarsi short, about half the length of the tibia?. 12. 



