of the Group Cerambyciiue. 25 



to those of the male. The antennae in the female are in nearly 

 every case shorter than the boJy. 



§ A. Antennae variable. Femora without ca- 

 rinas. Presternum subtruncate behind. 

 Elytra usually spinose at the apex. 

 ( Pachydissu s verus.) 



Antenna? shorter than the body, with the 

 third to fifth joints strongly thickened, sub- 

 equal. Apices of the elytra transversely 

 truncate, each briefly bispinose. Head with 

 a single transverse groove underneath LP. breoicornis, sp. n. 



Antenna? slightly surpassing the elytra, 

 -with the third and fourth joints strongly 

 thickened, the third but J it tie linger than the 

 fourth. Apices of elytra obliquely truncate, 

 each bispinose. Head underneath with two 

 distinct transverse grooves separated by a 

 prominent ridge 2. P. sericus, Newm. 



Antenna? ( 6) ? Prothorax wholly irregu- 

 larly wrinkled above. Apices of elytra trans- 

 versely truncate, each moderately bispinose. 

 Head with a single transverse groove under- 

 neath. Prosternal process slightly bifid 

 behind 3. P. rugosicollis, sp. n. 



Antenna? ( <3 ) almost half as long again as 

 the body, with the third and fourth joints 

 slightly nodose at the apex, the third half as 

 long again as the fourth. Apices of elytra 

 obliquely truncate, each bispinose. H ead 

 with two distinct transverse grooves under- 

 neath 4. P. intermedins, sp. n. 



Antenna? 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 underneath 5. P. nuhilus, I'asc. 



Antennae a little longer than the body, with 

 the third and fourth joints strongly thickened, 

 subequal. Apices of the elytra rounded or 

 subtruncate, each briefly mucronate at the 

 suture. Head with a single transverse groove 

 underneath G. P. picipennis, Germ. 



Antenna? nearly twice as long as the body, 

 with the third and fourth joints and some of 

 the following slightly nodose at the apex, the 

 third much longer than the fourth. Pro- 

 thorax narrowed anteriorly and posteriorly, 

 somewhat angulately dilated in the middle. 

 Apices of the elvtra truncate, each briefly 

 spined at the suture 7. P. parvicollis. sp. n. 



