CERAMBYCrSI. 119 



near the suture ; separately rounded at the apex and armed 

 each with a short spine at the suture. Hind breast and 

 abdomen subnitid, sparsely pubescent. Legs subnitid, minutely 

 punctulate and sparsely pubescent ; femora elongate-fusiform, 

 laterally compressed, widest at about the middle, gradually narrowed 

 towards base and apex ; first joint of hind tarsus slightly longer 

 than the second and third united. The elytra are relatively 

 broader in the $ than in the c? , a little broader than the broadest 

 part of the prothorax, whereas in the cf they are not quite so 

 broad. 



Lewjtli 16-24; breadth 4-7 mm. 



Hob. Gwalior; Madras; Malabar; Siam. 



Group CERAMBYCINI. 



The head usually has in front a central area limited by impressed 

 lines or grooves ; gula with short mentigerous process ; ligula 

 membranous. Antennae longer as a rule than body in d 1 , with 

 third, fourth and sometimes fifth joints more or less thickened 

 at apex, fourth shorter than the third or fifth. Acetabula of front 

 coxse generally rounded, sometimes angulate, on outer side, closed 

 or very nearly closed posteriorly ; the intercoxal process more or 

 less strongly dilated at the end. Acetabula of middle coxae open to 

 epimera. Metasternum without scent-pores. First sternite of abdo- 

 men distinctly longer than the second. Wing-venation reduced, 

 apparently by disappearance of posterior branch of Cu 1 and of 

 connecting-vein between Cu 2 and A 1. 



The genera of this group are exceedingly variable in structure, 

 and do not admit of being characterized with any great amount of 

 precision. The characters given in the synopsis which follows, 

 though applying to the great majority of the species in each 

 genus, may possibly be found not to apply to all. 



Synopsis of Genera. 



A. Acetabula of front coxse angulated on outer 



side. 



a. Prothorax strongly tuberculate or spined 



on each side PLOCJEDERUS, p. 120. 



b. Prothorax unarmed at sides NEOCERAMB-JX,P. 124. 



B. Acetabula of front coxae not angulate on 



outer side, or but very feebly so. 

 a. Antennae not strongly compressed and 

 dilated on anterior side, usually much 

 longer than body in c? . 

 a'. Prothorax not, or but very little, longer 



than broad. 

 a 2 . Head with obtuse median carina 



between upper lobes of eyes ^OLESTHES, p. 126. 



6 2 . Head with usually a median groove, 

 never a carina, between upper lobes 

 of eyes. 



a 3 . Antennal supports acutely pro- 

 minent on inner side MASSICUS, p. 129. 



