EXPLANATION OF PLATE LXVII. 



SCHLGENBACHIA KOSTRATUS, J. Shy. 



Fig. 1. Inner whorls of a large specimen exhibiting many of the costa' 

 bifurcate, with here and there single interpolated ribs — ^ nat. 

 ,, 2. Transverse view of PI. lxvi., fig. 2, displaying a septum — J nat. 



S. KOSTKATUS, rar. ANXIPODBUS, Eth.fil. 



,, 3. Lateral view. 



,, 4. Ventral view with keel. 



