140 



Tall Bearded Ins 



Fig. XXXMIL— Mme. Ciiereau 



under Classification , pages 104 and loS). The 

 \ ariety Governor Hughes has an unusually large 

 beard. 



On the falls of nearly ever}' variety of the Iris 

 there are conspicuous veins which extend down the 

 haft (Fig. XXIV, page 133 and Fig. XXXII, page 138). 

 These (sometimes called the "signal" or the "signal 

 patch") it is supposed, by some scientists, serve as 

 guide-lines to indicate to visiting insects the Ava}' to 

 the nectar pit at the base of the falls (Fig. XL, page 



