468 Charles R. Stockard 



In Ophiocoma riisei when all of the individuals are growing, 

 those regenerating a larger number of arms increase in size slower 

 than the specimens regenerating fewer arms. 



Ophiocoma echinata regenerates each arm faster when only a 

 few arms are cut and such individuals increase in size at about 

 the same rate as do those which are regenerating each arm more 

 slowly although more arms are being replaced. 



Regenerating tissue possesses an excessive capacity for the 

 absorption of nutriment and may do so even to the detriment of the 

 old body tissue. 



