386 INSF.CTA. 



RHINOTRAGUS, Da/man, 



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

 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 

 antenna?, shorter than the body, slightly dilated and somewhat serrated at the 

 extremity ; and in the almost orbicular thorax. 



NECYDALIS, Linnceus. 



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 

 extremity. 



Certain insects generally proper to the African islands, New Holland, New 

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

 a natural order, should perhaps be placed between the Lamiariae and the 

 Lepturetse, will terminate the division of the Cerambycini. 



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

 what 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 are truncated at the extremity. 



These insects form four genera: Distichocera, Tnwsisternus, Trajocerus, 

 and Leptocera. 



The Longicornes of our third tribe, that of the LAMIARIJE, 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 maxillae is slightly narrowed at the end, and 

 curved on the inner division. The antennte 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 character exhibited 

 by no other division of this family. 



ACROCINUS, Illiger. 



Distinguished from all the Longicornes, by the thorax, each side of which 

 is terminated by a moveable tubercle, terminating in a point, or by a spine. 

 The body is flattened, and the thorax transversal; the antennae are long and 

 slender, and the anterior legs longer than the others; the elytra are trun- 

 cated at the end and terminated by two teeth, the exterior of which is the 

 strongest. 



