ClIAP. XIII. 



LAW OF BATTLE. 



47 



wiiig-spurs serve as sexual weapons ; but according to 

 Livingstone, they are chiefly used in the defence of the 

 young. The Palaniedea (fig. '38) is armed with a pair of 





Fig. 3S. Palaiiicdea cornuta (Ironi Biehm), shewing the double-wing-spurs, and the 



filament on the head. 



