INDEX. 



255 



Vaal river, crossed by " Voetgangers," 



118 

 "Voetgangers," interesting points in 



their natural history, 1 1 7 

 on attaining maturity, 123 

 their manner of travelling, 117, 118; 

 no obstacle stays their course, how 

 they cross rivers, their methods in 

 water, 118, 121, 122 



Wallace, Dr., on Alluring Colouration, 



35 

 on Walking-sticks proper, 63 



" Weta-punga," the, 156 



Wetas, the, an interesting group inhabit- 

 ing New Zealand, 156-158 



Wingless locusts, how they cross rivers, 

 118, 121, 122, 126 



Wings, hind, in Phasmidoe, may be 



largely developed, 43, 46, 64, 67 

 interesting provision for their defence, 

 43 



W 



Walking-sticks proper, 41, 44-46, 48, 



63 ; Wallace on, 63 

 beautiful and giant-winged forms, 46, 



64, 67 



bizarre shapes, 41, 65 

 that they are a singularly isolated 



group, 79 

 that they come of a remote antiquity, 



78 



Wallace, Dr., and Bates, their encounter 

 of Hawk Moths at sea, 238 



X 



Xerophyllum, the genus, 134 



Xiphidium ensiferum, deposition of its 



eggs in galls, 143, 144 

 time required for embryonic develop- 

 ment, 144 ; for post-embryonic de- 

 velopment, 144 



Yucca Borer, the, 190 



THE END. 



PRINTED BY WILLIAM CLOWES AND SONS, LIMITED, LONDON AND BECCLES. 



