CONTENTS 



Introduction page 3 



Sources of material 3 



Methods 4 



Acknowledgments 16 



Development 17 



The egg 17 



First Nauplius 19 



Second Nauplius 19 



Metanauplius 20 



First Calyptopis 23 



Second Calyptopis 26 



Third Calyptopis 29 



Summary of previous knowledge relating to the Furcilia and Cyrtopia 



stages 32 



Early Furcilia stages 3^ 



Interpretation of dominant stages 3^ 



Intermediate Furcilia stages 4^ 



Later Furcilia stages 49 



Description of Furcilia stages 68 



First Furcilia 09 



Second Furcilia 7" 



Third Furcilia 84 



Fourth Furcilia °° 



Fifth Furcilia 92 



Sixth Furcilia 9^ 



Adolescent forms 99 



Anomalous length frequencies in adolescent forms 103 



Average length of larvae loo 



Average growth rate i°7 



Distribution i°9 



Eggs 109 



Regional io9 



Vertical m 



Time of spawning '^3 



Nauphi 114 



Metanauplius ^'4 



Regional ^H 



Vertical I'S 



Time of occurrence 117 



Calyptopis and Furcilia stages and adolescents 117 



Regional distribution ii7 



Vertical distribution ^5^ 



Time distribution ^"^ 



General remarks on distribution 103 



Summary '"6 



List OF literature CITED 167 



Appendix I ^69 



Appendix II ^9° 



