66 



Colouration in Animals and Plants. 



Varieties of Actinea Cari. 



The following brief descriptions illustrate the distribution of 

 the colour : 



Actinea Cari. 

 Uniform varieties (Homochroma). 



In this table the varieties above mentioned are further par- 

 ticularized. The column is the stalk or body, the tentacles are the 

 arms, the gonidia the eye spots, and the zone the line round the base. 

 It will be noticed that these regions are often finely contrasted in 

 colour. 



Bunodes gemmaceus is another variable form, and the following 

 varieties are recognised. 



