CEEAMBTCIITjE. 91 



known of their function in tlie aise of a few species, are con- 

 sidered to be the external apertures of scent-glands. But nothing 

 is known as to the nature of the scent in the great majority 

 of the species. In a few, such as the European species Aromia 

 moschata, the scent is like that of attar-of-roses. 



Synojisis of Groups. 



A. Aiitennpe inserted in front of eyes, very close to 



base of mandibles ; eyes rather tinely facetted. 



Group rrofd.tini. 



B. Antennae more or less distant from base of 



mandibles, 

 a. Eyes, except in Tetropiuin, coarsely facetted. 

 a' . Acetabula of middle coxae open to epimera. 

 (/■-. Intercoxal process of prosternum very little 

 or not at all dilated at end ; acetabula of 

 front coxue angulated on outer side, open 

 posteriorly ; gula usually without menti- 

 gerous process, 

 a'. Wing-venation of Lepturine type; an- 

 teunje shorter as a rule than body in 

 both sexes, not embraced by the eyes at 



base Group Ascnnvn. 



6\ Wing-venation reduced; antennae longer 

 than body in J , usually embraced by the 

 eyes at base. 



«'. Ligula corneous Group CEmim. 



bK Ligula membranous Group llesperophanini, 



h'-. Intercoxal process of prosternum dilated at 

 end ; acetabula of front coxae closed or almost 

 closed posteriorly, rarely angulated on outer 



side Group Ceramhycini. 



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

 d". Antennae spined posteriorly at the apex of 



certain joints Group PJivravanthiiiL 



b-. Antenme not spined. 



a^. First abdominal segment of normal 

 length ; acetabula of front coxao open 



posterioi-ly Grouj) Callidiojjsini. 



b^. First abdominal segment very long in 

 both sexes, third much shorter than 

 second in 5 ; acetabula of front coxae 



closed behind Group Ohriini. 



1). Eyes finely facetted. 



a . Acetabula of middle coxae open to epimera. 

 «-. Front coxae angulated on outer side. 



rt^. Eyes emarginate, anteunte contiguous to 

 them. 

 uK Front coxae somewhat conical, rather 

 strongly exserted, their acetabula 

 usually closed posteriorly. . . . Group Molorchim. 

 hK Front coxfe not conical nor strongly 

 exserted, their acetabula open pos- 

 teriorly Group liosaliini. 



b^. Eyes entire, antenna? somewhat distant 



from them Group Mijthodini. 



