EXPLANATION OF PLATE XXITI. 



Ausienia rotungensis, n. sp. 



Figs, i, la. — Shell, from above and below, X 2. 



Fig. 2. — Animal viewed from the right side, natural size. 



,j 3. — Do. from above. Do. 



,, 4. — Apical coil of the visceral sac, X 4*5 . 



,, 5. — Extremity of the foot. 



Sarama kem-pi, n. sp. 



Fig. 6.— Shell, X I'S- 



,, 7, — Animal, seen from right side, showing right shell lobe, 



and dorsal lobes, X 2. 



8. — Do. from left side, showing the left shell 



lobe, X 2. 



