226 BULLETIN OF THE MUSEUM OF COMPARATIVE ZOOLOGY. 



Fig. E, F. Veronicella olivacea, from one of original lot from Folvon. 



Fig. G. Lingual membrane of Glandina decussata. 



Fig. H. Genitalia of Phenacarionjbliolatus, var. Hemphilli; same references as in 



D ; one half of natural size. 

 Fig. I. Prophysaon Andersoni ; surface magnified sixteen times. 



a. a. a. reticulations of the body. 



b* b. foliolated spaces between reticulations. 



c. lower edge of the body. 



d. locomotive disk. 



Fig. J. The same, magnified eight diameters ; upper surface; same references 



as the last. 



PLATE X. 



Drawn by A. H. Baldwin, Smithsonian Institution. 



Aglaja fidelis ; the large, elevated black variety. 



Sculpturing of same. 



The same ; small, black, elevated form. 



Sculpturing of last. 



The same ; small, depressed form. 



Aglaja infumata ; sculpturing. 



Arionta Mormonum ; sculpturing of the form figured on Plate XI. Figs. G, H. 



PLATE XI. 

 Drawn "by A. H. Baldwin. 



A. Arionta arrosa. 



B. Variety of last, approaching A. exarata. 



C. Sculpturing of last. 



D. Arionta exarata ; type. 



E. Sculpturing of last. 



F. Arionta Mormonum. 



G. H. Variety of last, connecting with Hillebrandi. 



