66 COLEOPTERA. 



be truly indigenous in England, as, although they have been met 

 with occasionally, they are thought to have been imported with 

 timber. They are black insects, with long antennse, and a spine 

 on each side of the thorax. The two commonest species are 

 C. Cerdo, Fabr., which is about an inch in length, and C. Heros, 

 Scop., which has the elytra tipped with brown, and is sometimes 

 nearly two inches in length, but which, like many other wood- 

 feeding insects, varies considerably in size in different specimens. 

 The beetles may be found on flowers, or on newly-felled timber. 

 The latter is so attractive to beetles that when Mr. A. E. Wallace 

 was collecting in the Eastern Archipelago, he always used to get 

 some trees felled as soon as he established himself in a new 

 locality, and rarely failed to reap a rich harvest. 



Eburia, Serv., is a very pretty South American genus; the 

 species are of moderate size, and are generally of a yellowish 

 colour, with spots of an ivory white. 



Pachyta, Serv., includes several moderate-sized European species, 

 seldom reaching the length of half an inch. P. Quadrimaculata, 

 Linn., has yellow elytra, with black spots. These beetles are 

 found on flowers, especially in mountainous regions. 



Leptum, Linn., is a large genus, the species of which are gener- 

 ally about half an inch in length, and are found on flowers ; the 

 female is provided with a short ovipositor. L. Cordigera, Fuessly, 

 found in South Europe, and perhaps in South- Western Germany, 

 is black, with more or less of the sides of the elytra red. 



In Necydalis, Linn., and some allied genera, the elytra are 

 exceedingly short, but the wings are not folded beneath them as 

 in the Brachelytra, but uncovered. N. Major, Linn., is black, with 

 yellowish pubescence, and yellowish antennas, legs, and elytra. It 

 measures an inch in length, and is occasionally met with on sallow- 

 blossoms, on the Continent, but is far from common. 



The commonest of the larger Longicorns in North Europe is 

 undoubtedly the Musk Beetle (Aromia, Moschata). It is green, 

 with a lateral spine on the thorax, and is about an inch long. It 

 is rather a sluggish insect, and may be found resting on the trunks 

 of willows, on the wood of which its larva feeds. It may easily 

 be seized with the fingers, as it is quite harmless, though it emits 

 a peculiar, but not unpleasant odour. 



Callichroma, Latr., is a very similar genus, fairly well repre- 

 sented in most tropical countries. Most of the species are green, 

 and closely resemble our common Musk Beetle. 



