184 CEEAMBYC1D.D. 



Synopsis of the Genera. 



Front of head vertical, narrowly concave be- 

 tween antennae, latter not very widely 

 separated PUKPUBICENUS, p. 184. 



Front of head inclined, nearly flat between 



antennae, latter very widely separated . . EUBYPHAGUS, p. 187. 



Genus PURPURICENUS. 



Purpuricenus, Latrielle, Heffne Anim. ed. 2, v, p. 114 (1829) ; Serville, 

 Ann. Soc. Ent. Fr. ii, p. 568 (1833) ; Lacord. Gen. Coleopt. ix. 

 p. 177 (1869). 



Cyclodera, White, Stokers Voy., App. i, p. 510 (1846). 



Philagathes (Thorns.), Lacord. (in part) Gen. Coleopt. ix, p. 176 

 (1869). 



Type, P. desfontainei, Fabr., a European species. 



Range. Chiefly Palsearctic and Nearctic, with a few species in 

 each of the other great regions, excepting the Neotropical. 



Head more or less distinctly concave between the antennal 

 supports ; the latter acute and somewhat prominent on the inner 

 side ; front vertical, transverse, post-clypeus short with thickened 

 front edge, ante-clypeus (or epistome) membranous ; eyes deeply 

 emarginate ; gense moderately long; mandibles short. Antenna 

 of the c? longer than the body by from one-fourth to half or more 

 than half of their length ; third joint a little longer than the fourth, 

 fourth to tenth subequal in length ; eleventh appendiculate, longer 

 than the tenth, gradually attenuated towards the end ; antennae of 

 2 either shorter or a little longer than the body, with the joints 

 from the fifth to the tenth successively and gradually shorter, 

 broader than in the <3 , and angulated at the apex on the anterior 

 side ; eleventh very little, or not at all, longer than the tenth. 

 Prothorax transverse, with a conical tubercle at the middle of each 

 side. Scuteiiurn triangular, acute at the apex. Elytra moderately 

 long, regularly convex, more or less parallel-sided, rounded at the 

 apex. Femora subclavate, the hind pair extended nearly to the 

 apex of the elytra, rarely beyond it, in the <S ; tarsi more or less 

 broad, the first joint in the hind pair shorter as a rule than the 

 second and third united. Acetabula of the front coxae rounded on 

 the outer side, open posteriorly ; the intercoxal process vertical or 

 subvertical, sometimes tuberculate, posteriorly. Intercoxal process 

 of niesosternum emarginate posteriorly, usually furnished with a 

 small tubercle near the end. 



200. Purpuricenus sanguinolentus, Oliv. (Cerambyx) Entom. iv, 

 No. 67, p. 93, pi. 20, fig. 155 (1795) ; Lacord. (Philagathes) Gen. 

 Coleopt. ix, p. 176, note 2 (1869). 



Black, with two broad, bright red, or sometimes pale yellow, 

 bands across the elytra, one at the base, the other wholly or in its 



