Bulletin 22 18 



PLATE 11 



Page 



Fig. 1. Akera texana Aid ■ 5 



2. Scobinella newtonensis Aid , 5 



3. Pleurotoma ( Bathytoma ) marieana Aid 6 



4. 5. Scobinella sculpturata Aid 6 



6. Bittium (Stylidium) anita Aid 7 



7. Retusa claibornensis Aid ,.. J 9 



