MOLLUSGA—THE FOOT AND ITS GLANDS 



113 



Fig. 101.— Anatomy of Dent- 

 aliiun entale, after Leuckart 

 (Wandtafelii) and Lacaze-Du- 

 thlers. The riglit lialf of the 

 shell and the lower portion of 

 the mantle are removed. «, 

 Pallial nerve running up from 

 the visceral ganglion ; h, shell ; 

 c, space between the mantle and 

 shell; d, anus; e, visceral gan- 

 glion ; /, mantle cavity ; g, 

 mantle ; h, lower, t, upper buccal 

 ganglion ; i, auditory organ ; k, 

 pedal ganglion, m, lateral folds 

 of the foot ; n, ternunal pedal 

 cone ; o, filamentous tentacles : 

 I, lower edge of the mantle ; p, 

 leaf -like oral appendages ; '/, 

 snout ; r, . cerebral ganglion ; s, 

 shell or columellar muscle, cut 

 through ; «, right nephridial (and 

 genital) aperture ; r, digestive 

 gland (liver) ; w, gonad ; x, upper 

 end of the columellar muscle ; y, 

 upper open end of the mantle. 



VOL. II 



