114 INSECTA. 



Lamiariae and the Lepturetae, will terminate the division of the 

 Cerambycini. 



Their palpi are almost filiform, the last joint almost cylindrical, and 

 somewhat attenuated towards the base; their thorax is usually smooth, 

 or but slightly uneven, without acute tubercles, and becomes widened 

 posteriorly, or presents the form of a trapezium or truncated cone, as 

 in the last tribe of this family ; the abdomen in the greater number is 

 almost in the form of a reversed triangle, and the elytra arc truncated 

 at the extremity. 



These Insects form four genera, 



DiSTICHOCERA, KilblJ, 



Where the antennse of the males are gradually dilated towards the 

 extremity, and their joints, from the third, are forked or divided into 

 two branches at the end*. 



Tmesisternus, Lat., 



Where the antennae are simjjle, setaceous, and longer than the body; 

 the thorax is lobate posteriorly, and the preesternum prolonged be- 

 hind, truncated, and received into the emargination of the mesos- 

 ternumf. 



Tragocerus, Dej., 



Where there is no preesternal projection; the antennse are filiform, a 

 little shorter than the body, and somewhat serrated ; the thorax is 

 unequal, slightly sinuous laterally, and the elytra form a large square J. 



Leptocera, Dej., 



Where the praesternal projection is also wanting ; but the antennae 

 are setaceous and mucFi longer than the males ; the thorax is smooth, 

 and in the form of a truncated cone, and the abdomen and the elytra 

 are almost triangular §. 



The Longicornes of our third tribe, that of the Lamiari.i:, are dis- 

 tinguished by their vertical head, and by their palpi, which are filiform 

 or hardly larger at the extremity, and terminated by a joint more or 

 less ovoid and tapering to a point. The outer lobe of the maxillae is 

 slightly narrowed at the end, and curved on the inner division. The 

 antennae are most frequently setaceous and simple, and the thorax, 

 exclusive of the lateral tubercles or spines, is nearly of an equal width 



* Kirby, Lin. Trans,, XII, xxiii, 10. 



f Uadescribed Insects from New Holland which are closely related to the Callidia 

 variegatum, Uneatum, B.nd sulcatum, Fab. 



X Dej., Catal., iii. 



§ Cerambyx scriptus, L,, Isle of France. For these genera, see the Trans. Lin. 

 Soc, and Donovan's work on New Holland Insects. 



