IxNDEX 



489 



Wiesner, theorj' of protoplasmic 

 structure, 250. 



Willows, variation in stamens of 

 (illusj, IGO. 



Wilson, E. B., 125, 126, 279. 



Wing hooks of honeylx-'c (illus.), 

 155. 



Wings of a drone honeybee, show- 

 ing variation (illus.), 155; (il- 

 lus.), 15(); of animals, analogies 

 in, 173; variation in pattern of, 

 in Perorwn cristana, 148. 



Wiiiiliemia 4-pustuIota (illus.), 34S. 



Woodpecker, California, acorns de- 



posited in tree by (illua.;, 432; 



(illus.), 434. 

 Woniis, parasitic, 354. 

 Wynuin. J.. 461. 



Xerophnllum nmilt (illiw.), 409. 



Youatt, cSt). 



Zcl)ra, hybrid (if, with h«>n«", I'^^ 



Zirplura rrisfxiln (illus), 'M. 



Zoogeography, 309. 



Zoya, 279. 



Zur Stnus-sen, O., 279. 



(5) 



