CERAMBYCIDAE. 31t 



clivous, and perpendicular behind ; middle coxae inclosed by the 

 sternal pieces, not angulated externally; mesosternum rather 

 broad, protuberant, suddenly declivous in front, truncate or 

 broadly ernargmate behind, side pieces moderately large, inter- 

 vening between the sterna, but not extending to the coxae. Me- 

 tasternum acutely emarginate behind for the reception of the 

 intercoxal process, episterna linear, ventral segments gradually 

 decreasing in length. 



Legs rather short, thighs not clavate, not spinose at tip ; tibia? 

 strongly carinated, with the 1st joint as long as the two follow- 

 ing united. 



The closest affinities of this genus in the series with finely granu- 

 lated eyes are evidently with Cyllene, but there is an equally evi- 

 dent cross affinity in the direction of Elaphidion, Sphaerion, etc. 



Batyle, associated with Stenosphenus by Lacordaire, has the 

 scutellum acutely pointed, the hind legs elongated, the antennal 

 tubercles more elevated, and the eyes more prominent. It seems 

 to me a degraded ally of Purpuricenus, and I have placed it 

 accordingly. 



Tribe XL— CL.YTINI. 



A tribe containing many species, but on account of the varia- 

 tion in appearance and characters very difficult to define. The 

 head is sometimes rather small, sometimes large, the front long, 

 quadrate, and vertical in some, short and oblique in others, 

 eyes finely granulated, deeply emarginate, with the lower lobe 

 always large; antennae with the outer joints sericeous, usually 

 shorter than the body in both sexes, sometimes longer in the % , 

 joints 3-7 in some genera (Cyrtophorus) armed with an apical 

 spine ; palpi short, equal, dilated, but not very broadly, last 

 joint impressed ; mandibles short, stout, acute ; mentum nearly 

 semicircular, corneous. Front coxal cavities rounded, open 

 behind, not angulated externally ; middle cavities usually open, 

 sometimes (Euderces, etc.) closed externally, side pieces large, 

 articulating with the metasternura, so as to interpose between 

 the meso- and metasternum ; the latter with the side pieces 

 usually wide, sometimes narrow. Legs long, thighs sometimes 

 slender, sometimes clubbed, spines of hind tibiae usually well 

 developed, tibiae not carinated, hind tarsi with first joint usually 

 very elongate. Ventral segments diminishing gradually in length. 



