PLATE IV. 



e 



Xyleborus perforans (C. S. 1970). 



a, Affected sugarcane stem ; a slice cut off from a part to show tunnels. 



b, Larva (X 9). 

 e, Pupa (x 9). 



d, e, Beetle (x 9). 



(The smaller figures show the natural sizes.) 



