414 INSECTA. 



in the manner of a snout; palpi filiform, the last joint terminating ina point; 

 antennae long' and setaceous; thorax long, narrow, almost cylindrical, or 

 forming a truncated oval. 



Rhinotragus, Dalm. 

 Differs from the preceding one in the head, which is narrowed and pro- 

 longed anteriorly in the manner of a snout; in the palpi of which the last 

 joint is rather thicker than the preceding ones, and truncated at the end; 

 in the antennae, shorter than the body, slightly dilated and somewhat ser- 

 rated at the extremity; and in the almost orbicular thorax. 



Necydalis, Lin. 

 The only one of this tribe in which the elytra are either very short, and 

 squamiform, or prolonged, as usual, to the extremity of the abdomen, but 

 abruptly contracted a little beyond their origin, then much narrowed, and 

 terminating in a point, or subulate. Their abdomen is long, narrow, con- 

 tracted, and as if pediculated at base. The wings are folded at their ex. 

 tremity. 



Certain insects generally proper to the African islands, New Hol- 

 land, New Ireland and New Zealand, ambiguous in several respects, 

 and which, in a natural order, should perhaps be placed between 

 the 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 trun- 

 cated 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 are truncated at the extremity. 



These Insects form four genera. Distichocera, Tmesisfemus, 

 Tragocerus, and Leptocera. 



The Longicornes of our third tribe, that of the LAMiAKiiE, are 

 distinguished 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 

 maxillas 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 throughout. Some species are apterous, a char- 

 acter exhibited by no other division of this family. 



