RHEOTAXIS IN ISOPODA 



287 



1 Trying to molt for eleven days, but was weakene'd by exposure to potassium 

 cyanide. Died from molting. 



2 Died from molting trouble. 



3 Molted within six hours before the trial was made. 



* Molted posterior part piecemeal and did not finish until nine days later. 



* Put in potassium cyanide which probably accounts for the depression. 

 ^ Molted piecemeal. 



'' Did not molt again in the forty-four days it was watched. 



* Died from molting. 



^ No molt seen in forty days although piecemeal molting may have occurred. 

 1° No more molts in thirty-one days before death. 

 " Escaped from petri dish during interval before concussion tests. 

 12 Molted piecemeal. 



