COLOR AND THE BEHAVIOR OF ARTHROPODS 



89 



in Klingksiegk and Valette's color code: Red, 7; yellow, 201; 

 green, 306; blue, 426. During each experiment six animals 

 were placed in six dishes, having black, red, yellow, green, blue 

 and white backgrounds respectively; each crab was given a 

 choice of six colors of paper for decorating purposes, these were 

 equally divided among sixty pieces. The series of experiments 

 extended from July 18 until August 4. Table IV shows that 

 there was again no evidence that Libinia has any ability to 

 select colors which correspond to the background on which it 

 rests. 



From the experiments described it will be seen that Libinia 

 showed no ability to discriminate colors. Professor S. O. Mast 

 has carried out similar experiments and reached same con- 

 clusion. Furthermore, the late Millet Thompson of Clark 



TABLE IV 



Showing the Number of Colored Papers Selected by Libinia on Variously 

 Colored Backgrounds. B, Black; R, Red; Y, Yellow; 



G, Green; U, Blue; W, White 



