RELATIONSHIPS AMONG CYCLOPS. 43 



marginal hairs are strongly developed when the foot first appears, 

 long before these appendages are perfectly developed and 

 before the metamorphosis is complete. 



The constancy with which the individual characteristics 

 occur throughout the successive stages of a complicated meta- 

 morphosis in both of these Cyclops would seem to indicate that 

 the two forms are not at all identical as Herrick supposed, but 

 distinctly different: 



Indeed the reappearance of these same peculiarities generation 

 after generation shows that we are dealing with phenomena of 

 inheritance that have become fully established and not with 

 variations, for the correlated characteristics have become so 

 fixed in C. signatus var. tenuicornis (annulicornis) and C. signatus 

 var. coronatus that each breeds true to its own type. 



