of the Group CerambycliKe. 25 



to tliose of tlie male. The antennae in the female are in nearly 

 every case shorter than the body. 



§ A. Anteun.is variable. Femora without ca- 

 rinas. Prosternixm subtriincate behind. 

 Elytra usually spinose at the upex. 

 {Pacht/diesui vents.) 



Antennae shorter than the b>dy, -with the 

 third to fifth joints strongly thickened, sub- 

 etjual. Apices of the elytra transversely 

 truncate, each briefly bispinose. Head with 

 a sin<jle transverse groove underneath LP. dreoicornis, sp. n. 



Antennfe slightly surpassing the elytra, 

 with the third and fourth joints strongly 

 thickened, the third but little longer than the 

 fourth. Apices of elytra obliquely trunc.ite, 

 each bispinose. Head underneath with two 

 distinct transverse grooves separated by a 

 prominent ridge 2. P. sericus, Newm. 



Antennae ( S)? Prothorax wholly irregu- 

 larly wrinkled above. Apices of elytra trans- 

 versely truncate, each moderately bispinose. 

 Head ^^ith a single transverse groove under- 

 neath. Prosternal process slightly bifid 

 behind 3. P. rugosicoUis, sp. u. 



Antennae (J ) almo.^t half as long again as 

 the body, with the third and fourth joints 

 slightly nodose at the apex, the third half as 

 h.ng again as the fourth. Apices of elytra 

 obliquely truncate, each bispinose. llead 

 with two distinct transverse grooves under- 

 neath 4. P. intennedius, sp. u. 



Antennae half as long again as the body, 

 with the third and fourth joints very slightly 

 thickened at the apex, the third twice 

 as long as the fourth. Apices of elytra trans- 

 versely truncate, each bispinose. Head with 

 a single transverse groove tiuderneath 5. P. nuhilicf, Pasc. 



Antennae a little longer than the body, with 

 the third and fourthjoints strongly thickened, 

 siibequal. Apices of tlie elytia rounded or 

 subtruncate, each brJefiy mucronate at the 

 suture. Head with a single transverse gi-oove 

 underneath G. P. picipennis, Germ. 



Antennae nearly twice as long as the body, 

 with the third and fourth joints and some of 

 the following shghtly nodose at the apex, the 

 third much longer than the fourth. Pro- 

 thorax narrowed anteriorly and posteriorly, 

 somewhat angulately dilated in tlie middle. 

 Apices of the elytra truncate, each briefly 

 spiued at the suture 7. P. parricoliis, sp. n. 



