Xantholminoi.'] sxAPiiYLiNiDiE. 287 



I. Antonnns strnnsily pronicnlnto ; suture of elj'tra imbricatcil. 

 i. Maxillary palpi with last joint about as long as penulti- 

 mate. 



1. Lateral margiual line of thorax prolonged nearly to an- 



terior angles without touching the internal border of 



reflexed margin Xantholinus, Serv. 



2. Lateral marginal line of thorax bent iinderneath and 



joining the border of reflexed margin some distance 



before anterior angles NuDOBiUS, Thorns. 



ii. Maxillary palpi with last joint very short, narrow, and 



subulate LeptACINUS, Er. 



IL AntennsG feebly geniculate ; suture of elytra simple. 



i. Elytra with sutural stria well marked; posterior tibin3 



simply ciliato BAPTOLiNtrs./iTma^z. 



ii. Elytra with sutural stria obsolete ; posterior tibiae spinosc O'snivs, Steph. 



XANTKOI.INUS, Serville. 



From this genus, as constituted below, the sub-genus NudoUus has 

 been removed, as in many respects it differs very considerably from 

 Xanfholmus in structure, and its habitat is very different from that of the 

 great majority of the true Xantholini ; the ?,\\\)-g,Qj\\\H Eulissus= Gaiirop- 

 terus, containing in our fauna the single species X. fuljidus, seems hardly 

 sufficiently distinct to justify its separation ; the genus XardlioUnus is a 

 very extensive one and contains at present upwards of two hundred species, 

 which are distributed over almost every quarter of tlie world ; there arc 

 ten British species, which may be distinguished as follows : — 



I. Thorax without dorsal series of punctures; forehead 



with two deep stria; ; elytra bright red (sub-gen. 

 i:ulissus,lslA.\mh.) . _ X. FUIGIDUS, .F. 



II. Thorax with dorsal series of punctures. 



i. Elytra bright red X. GLABEATUS, Cxrav. 



ii. Elytra black, pitchy brown, or bronze. 



1. Head strongly and coarsely punctured; temples 

 bordered at sides. 



A. Antennae and legs black ; dorsal series of thorax 



consisting of four or five punctures ; head sub- 

 quadrate X. PUNCTTJLATTTS, Payk. 



B. Antenna; and legs lighter or darker pitchy red 



or reddish testaceous ; dorsal series of thorax 

 consistingofeightoruinepunctures; headoblong X, OCnEACEUS, Gyll. 



C. Antennso and legs lighter or darker pitchy red, 



or reddish testaceous ; dorsal series of thorax 

 consisting of four or five punctures; head some- 

 what Bubquadrate, intermediate in shape be- 

 tween the two preceding species X. ateatus, Ileer. 



2. Head less strongly and much more diffusely punc- 

 tured; temples not bordered at sides. 



A. Elytra red, thorax black ; size rather small (6 



nim-) X. GLABER, Nord. 



B. Elytra and thorax testaceous red. 



a. Head oblong-ovate ; length 6-6^ mm. . . . X. distans, Fr. 



b. Headoblong; length 9-10 mm X. TEICOLOR, J^. 



C. Elytra bronze or black. 



