THE LAMELLICORNES, OR " CHAFERS." 125 



been observed in company, digging holes in dead trees 

 wherein the latter might deposit her eggs. 



Sinodendron, found in the rotten mould of old ash 

 and birch trees, is more elongate and cylindrical, with 

 its eyes entire. In the fully developed male there is a 

 stout horn on the head, bent backwards, and hairy be- 

 hind; the thorax, also, is semicircularly truncated in 

 front, with a rounded tooth in the middle, and the mar- 

 gin of the truncation denticulated. In the female the 

 head bears a tubercle, and the thorax, which is very 

 coarsely punctured, has a slight depression in front. 



