2U 



INDEX OF GENEKA AND SPECIES. 



Turris (mntinued) 



vesicaria A. Agass. 

 Turritopsis McCr. 



nutiicula McCr. . 

 Velella Lamx. 



mutica Bosc 



septeiitrionalis Escil. 



Willia Forbes . 

 oruata McCk. 



THE END. 



Cambridge : Elcctrotypcd and Primed by Welch, Uigcloiv, & Co. 



