TABLE OF CONTENTS 



PAGE 



Introduction i 



I. Historical Summary 2 



II. Methods 10 



III. Observations 13 



I. Chelipeds 12 



Tail Fins 17 



Swimmerets 18 



Antennae 19 



Gills and Exoskeleton 19 



Regeneration of Appendages From Levels 

 Other Than the Second Joint 



7. Eyes 



a. Portion of Eve Removed 



b. Entire Eye Removed 33 



Type I: A pair of flagella regenerated 32 

 Type II: A single flagellum regenerated 33 

 Type III : Segmented horn-like structure 34 

 Type IV : Unsegmented horn-like struc- 

 ture 35 



Type V : Indefinite structure .... 36 



c. Theoretical considerations ... 37 



IV. General Considerations 39 



V. Summary 41 



Bibliography 44 



Explanation of Plates 45 



20 



^3 



