CONTENTS. 



B. Cochlea 78 



A. Phaneropneumona 78 



Fam. 6. Cyclophoridai 78 



a. Cyclotina. 



1. Cyclotus 79 



2. Pterocyclos 79 



3. Opisthoporus 79 



4. Craspedopoma 79 



b. Aulopomina. 



5. Aulopoma 80 



6. Cyclophorus 80 



7. Leptopoma 80 



8. Alycjeus 80 



9. Diplommatina 80 



c. Pupinina. 



10. Megalomastoma 81 



11. Cataulus 81 



12. Pupinella 81 



13. Pupina 81 



14. Registoma 81 



15. Callia 81 



d. Licinina. 



16. Jamaicia 82 



17. Licina 82 



18. Choanopoma 82 



19. Adamsiella 82 



e. Cyclostomina. 



20. Lithidion 82 



21. Otoporaa 83 



22. Cvclostomus 83 



23. Tudora 83 



24. Leonia 83 



25. Cistula 83 



26. Chondropoma 83 



f. Pomatianina. 



27. Pomatias 84 



g. Realiana. 



28. Liarea 84 



29. Realia 84 



30. Bourciera 84 



Fam. 7- Oligyrada 84 



1. Stoastoma 84 



2. Trochatella 85 



3. Lucidella 85 



4. Helicina 85 



5. Aleadia 86 



Fam. 8. Proserpinida ... 86, 188 

 1. Proserpina 86,189 



b. Pseudopneumona 86 



Fam. 9. Littorinidce 86 



1. Assiminea 87 



2. Littorina 87 



Page 



3. Lithoglyphus 89 



4. Hydrobia 90 



5. Amnicola 90 



6. Nematura 90 



7. Risella 90 



8. Pagodus 91 



9. Ecbinella 91 



10. Modulus 91 



11. Fossar 91 



Fam. 10. Lacunidce 92 



1. Lacuna 92 



Fam. 11. Truncatellidm 93 



1. Truncatella 94 



2. Tonichia 94 



c. Teleobranchia 95 



Fam. 12. Planaacidce 95 



a. Planaxina. 



1. Planaxis 95 



2. Quoyia 95 



b. Ldtiopina. 



3. Litiopa 96 



Fam. 13. Rissoadte 96 



1. Rissoina 96 



2. Rissoa 97 



3. Skenea 98 



Fam. 14. Caddo. 99 



1. Caecum 100 



2. Brochina 101 



Fam. 15. Melaniadee 101 



1. Melania 10] 



2. Melanatria 102 



3. Pachycheilus 102 



4. Leptoxis 102 



5. Ceriphasia 102 



6. Gyrostoma 103 



7. Hemisinus 103 



8. Vibex 103 



9. Faunus 103 



10. Melanopsis 103 



11. Clionella 104 



12. Io 104 



Fam. 16. Cerithiada 105 



a. Cerithiina. 



1. Rhinoclavis 105 



2. Cerithium 105 



3. Bittium 106 



4. Tympanotomus 106 



5. Telescopium 106 



6. Pyrazus 107 



7. Lampania ]07 



