UNIVERSITY OF CALIFORNIA PUBLICATIONS 



IN 



ZOOLOGY 



Vol. 4, Nos. 6 and 7, pp. 345-393, text-figures 33. April 22, 1908 



CONTRIBUTIONS FROM THE LABORATORY 



OF THE 



MARINE BIOLOGICAL ASSOCIATION OF SAN DIEGO 



XXI 



EXUVIATION, AUTOTOMY AND REGEN- 

 ERATION IN CERATIUM 



BY 



CHARLES ATWOOD KOFOID. 

 XXII 



NOTES ON SOME OBSCURE SPECIES OF 



CERATIUM 



BY 



CHARLES ATWOOD KOFOID. 



BERKELEY 

 THE UNIVERSITY PRESS 



