92 CERAMBTCID^. 



i 2 . Front coxae rounded, not angulated on outer 



side. 



3 . Scent-pores showing near postero-lateral 

 angles of metasternuni ; scutellum gene- 

 rally large and triangular, with apex acute. 

 #*. Acetabula of front coxae distinctly open 



posteriorly Group Purpuricenini. 



b*. Acetabula of front 00x33 closed or 



almost closed posteriorly .... Group Callichromini. 

 b y . No scent-pores visible ; scutellum smaller 



and less acute at apex. 

 a 4 . Acetabula of front coxae closed pos- 

 teriorly. 

 a 5 . Legs" short, hind femora shorter than 



abdomen Group Pyrestini. 



i 5 . Legs long, hind femora longer than 



abdomen Group Prothemini. 



6*. Acetabula of front coxae open pos- 

 teriorly. 

 5 . Elytra usually dehiscent posteriorly, 



attenuated at apex. ....... Group Thraniini. 



b r \ Elytra not dehiscent nor attenuated 



at apex .... Group Clytini. 



b'. Acetabula of middle coxae not open to epimera. 

 a'-. Tarsal claws narrowly divergent ; eyes often 



entire Group Epipedocerini. 



b~. Tarsal claws widely divergent ; eyes always 



emarginate. 

 a 3 . Eyes not prominent, not extending on to 



front Group Cleomenim. 



b 3 . Eyes prominent, extending on to front. 



Group Glaucytini. 



Group PROTAXINI. 



Head short, rather broad, not narrowed posteriorly ; antennce 

 inserted wide apart and as close to base of mandibles as in the 

 majority of Prionime ; eyes at a short distance behind antennae, 

 emarginate, rather finely facetted ; gula with distinct ineutigerous 

 process. Antenna* shorter than body in both sexes. Prothorax 

 rounded at sides, broader in front than at base, almost flat above, 

 lateral edges somewhat sharp but not rnarginate. Mesonotum 

 with undivided stridulatory area. Tibise carinate along each side, 

 spread out at apex. Front coxae transverse, somewhat prominent, 

 their acetabula open posteriorly. Acetabulaof middle coxae extended 

 to epimera. Wings with veins Cu. 1 bifurcate, Cu. 2 absent. 



This group is formed for the reception of a single remarkable 

 genus which cannot well be included in any of the groups estab- 

 lished by Lacordaire. In some points of structure, this genus 

 shows an affinity with the Lepturince, but in the shape of the head 

 and prothorax it resembles no member of that subfamily. From 

 the forward position of the antennae, it appears to be a primitive 

 form, although in certain other respects it is more specialized 

 than the genera included in the next group. 



