APPENDIX. 267 



TABLE X. 

 GENETIC CYCLE OF THE ECHINODERMATA. 



PROTOMOPHIC STAGE. 



The ciliated Germ, passing into the condition of an Auricu- 

 laria, Bipinnaria, or Pluteus. 



ORTHOMOllPHIC STAGE. 



The Echinoderm, 

 (male and female). 



GAMOMORPHIC STAGE, 



(merged in the foregoing). 

 Spermary, Ovary. 



Primary Sperm Cell, Ovum. 



Special Sperm Cells ) ("The Germinal Vesicle, 

 and Spermatozoa. J ( and Macula. 



FECUNDATION. 



TABLE XL 

 GENETIC CYCLE OF THE POLYZOA. 



PROTOMORPHIC STAGE, 



(merged in the following). 

 The ciliated Germ. 



ORTHOMORPHIC STAGE. 



Double Polype-embryo. 



Polypes. 



Ramose Zoophyte monoecious or dioecious ; 

 with male and female polypes. 



GAMOMORPHIC STAGE, 



(merged in the foregoing). 

 Spermary, Ovary. 



Primary Sperm Cel], Ovum. 



Special Sperm Cells } (he Germinal vesicle 

 and Spermatozoa, j ( and Macula. 



FECUNDATION. 



