2(>2 University of California Publications. [zoology. 



such times the animal continues to move by means of the minute 

 cilia with which the body is covered but the motion is very slow. 

 The wave of motion of the large cilia is contra-clockwise when 

 viewed with the animal moving toward the observer. These 

 cilia are about .008 inm. in leugth. 



No specific gravity determinations were made but the animals 

 sank rather rapidly when placed in a vial of sea-water. 



