MONOGRAPH OF THE EXISTING CRINOIDS. 



739 



Red cirri occur with the following color : 



Purple (2 cases). 

 Green arm and pinnule tips occur with the following color : 



Brown (2 cases). 



Brown cirri occur with the following color: 



Violet (1 case). 

 Yellow distal cirrus segments occur on basal segments which are 



Purple, green, brown. 

 This gives us the following data : 

 Yellow is developed from (1) white in 8 cases; 



(2) lighter yellow in 6 cases; 



(3) red in 1 case. 

 Orange is developed from (1) white in 1 case; 



(2) yellow in 1 case. 



Red is developed from (1) white in 4 cases; 

 (2) yellow in 1 case. 

 Purple is developed from ( 1 ) yellow in 6 cases ; 



(2) white in 4 cases; 



(3) red in 3 cases. 

 Violet is developed from (1) white in 1 case; 



(2) yellow in 1 case; 



(3) red in 1 case; 



(4) brown in 1 case. 



Black is developed from (1) yellow in 1 case. 

 Gray is developed from (1) yellow in 2 cases. 

 Green is developed from (1) yellow in 4 cases; 



(2) brown in 2 cases ; 



(3) white in 1 case; 



(4) red in 1 case. 

 Brown is developed from (1) white in 5 cases; 



(2) yellow in 3 cases; 



(3) orange in 1 case. 



Or, expressed in the form of a table with the primary colors in columns and 

 the derived colors listed vertically : 



