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PLANT-EATING BEETLES. 



Longicorns. 



Family Cerambycidae, 



(Plate 32, I.) 



The adult (Plate 32, Fig. 3) is a decidedly elon- 

 gate oblong beetle, more or less flat, and usually 

 with very elongate trailing antennae often longer 

 than the body. 



Some longicorns are rather thick-set, and these 

 may have shorter antennae which are held hoisted 

 over the back like true horns, and, although they are 

 shorter than those of some longicorns, they are 

 longer than the antennae of most beetles. The 

 antennae taper towards the tip and the joints are 

 usually long and well defined. The eyes are 



notched and partly embrace the antennae (Plate 32, 

 Fig. 4). The foot is similar to that of the chryso- 

 melids. 



The elytra are frequently covered with short 

 hairs and patterns are thus formed, producing in 

 many cases beautiful examples of protective coloura- 

 tion which blends with the bark, etc., on which the 

 insects are found. One of the best examples of 

 such protective colouration was shown by a longi- 

 eorn which we found on the Castiarina or she oak. 

 The body of the beetle was of a soft green colour 

 and was elongate, and was placed along a larger 



