UNIVERSITY OF CALIFORNIA PUBLICATIONS 



IN 



ZOOLOGY 



Vol. 4, No. 6, pp. 345-386, text-figures 33. April 22, 1908 



CONTRIBUTIONS FEOM THE LABOEATOEY 



OP THE 



MAEINE BIOLOGICAL ASSOCIATION OF SAN DIEGO. 



XXI. 



EXUVIATION, AUTOTOMY AND REGENER- 

 ATION IN GERATIUM. 



BY 



CHARLES ATWOOD KOFOID. 



CONTENTS. PAGE 



Introduction 346 



Eedysis 347 



Occurrence in DinoflageUata 347 



Relation to schizogony 348 



'^ ~^ ■" "^ " 349 



349 



349 



352 

 With the compliments of 



Charles Atwood Kofoid s.'is 



356 



Zoological Laboratory 3gg 



University of California ^^^ 



360 



Berkeley, Calif. 36i 



363 



363 



363 



mv^aiwrnrj cnaracier or autotomy 364 



Location of planes of autotomy 373 



Significance of autotomy 374 



Relation to specific gravity 374 



Relation to specific surface 374 



Regeneration in Ceratium __ 377 



After schizogony 377 



Regeneration after autotomy 377 



Regenerative growth independent of autotomy 379 



Regulatory nature of regeneration of the horns 381 



Significance of regeneration 381 



Summary 383 



Bibliography 385 



