CERAMBYCIDAE. 319 



is densely punctured, brovvu or blackish, with the scutellum, a 

 narrow oblique baud composed of two spots about tlie middle, 

 and a wider transverse one behind the middle not extending to 

 the suture, of wiiite pubescence. 



The relations of this and the preceding tribe with the Ana- 

 glyptus group of Clytini are quite obvious. 



Tribe VI.— MOXOHAMMIi^I. 



We have given to this tribe a greater extension than that pro- 

 posed by Lacordaire, who restricted it to those genera in which 

 the scape of the antenna3 has a large cicatrix, limited by a raised 

 line. The relations between Ptychodes and Dorcaschema are so 

 obvious that they cannot be naturally separated. The tribe as 

 thus enlarged may be defined as fullows : — 



Front large, vertical, quadrate, flat; genie long; support of 

 labruni largo, coriaceous; mandibles flat; palpi slender, filiform, 

 pointed; eyes somewhat finely granulated, emarginate, lower lobe 

 variable in form. Antennae longer than the body, very long in 

 the % , except in Goes and Cacoplia, scape ratlier stout, with a 

 terminal cicatrix, except in Dorcaschema. Prothorax with or 

 without a lateral spine, elytra narrowed behind, or cylindrical, 

 wings perfect. 



Front coxiG angulated, with distinct trochantin, middle coxal 

 cavities widely open externally ; metasternuni longer than the 

 first ventral segment (as in all the following tribes); the inter- 

 coxal process acute; middle tibisE with a distinct tubercle on the 

 outer margin; tarsi not elongated, last joint large, claws not fully 

 divaricated, but somewhat movable as in Cerand)ycidi[e genuini. 

 The last ventral segment is truncate in both sexes, but more so 

 in the ?. 



Three groups exist in our fauna. 



Legs long, the front pair elongated in '^ , and the antennte much longer 

 than the body ; 



Prothorax with lateral spines. Monohammi. 



Prothorax cylindrical. Ptychodes. 



Legs equal, not elongated. Goes. 



rironj* I. — Monohammi. 



Several species of Monohammus represent this group in various 

 parts of the country; they affect the wood of pine trees. The 



