Anatomy of Cerithium Telescopium. 439 



a. Operculum. 



b. Foot. 



c. Muzzle. 



d. Mantle. 



e. Wrinkled rib over which the three folds of the matrix 



fit. 

 /. Oviduct. 

 t. Neck of matrix. 

 a. /3. y. The three folds. 



1 2. Ovaries exposed in situ. 

 g. Liver. 



f. Stomach. 



s. Integument. 



r. Ovaries. 



t. Matrix, 



o. Oviduct. 



13. m. Mass of mouth. 

 r. Wall to ditto. 



a. Left upper cerebral ganglion 



/3, Right ditto. 



r. ^. t. Nerves from lower part of right ganglion. 



^. T). Ditto from left. 



0. CEsophagus. 



14. t. Tongue. 



TO. Mass of mouth. 



s. Salivary glands, 



d. Salivary ducts, 



o. Orifice of ditto. 



X, CEsophagus. 



