Plate 

 LIII. 

 LIV. 

 LV. 



Lvr. 



LVII. 



LVIII. 



LIX. 



LX. 



Lxr. 



LXII. 



LXIII. 



LXIV. 



LXV. 



LXVI. 



LXVII. 



LXVIII. 



Histology of genital ducts of Septaria 



Anatomy of Nevita, Paranerita, and Neritina 



Alimentary tract and nervous system of Paranerita . . 



Anatomy and Histology of NeritidcB 



Paranerita gagates 



Paranerita variegata and gagates 



Male ducts of Nerita and Paranerita . 



Male ducts of Paranerita 



Anatomy and Histology of Neritidm 



Reproductive organs of Paranerita $ , 



Female organs of Paranerita 



-810 



Eeproductive organs of Nerita plieata $ 



Laeerta chlorogaster 934 



Qecarcinucus ingrami 960 



