CONTENTS. 



Page 



Fam. 15. Verenadce 43 



I. Verena 44,77 



Fain. 16. Sycotypidee 44 



1. Sycotypus 44 



Fam. 17. Velutinida 44 



1. Velutina 45 



2. Morvillia 45 



3. Marsenina 46 



4. Onchidiopsis 46 



Fam. 18. Naticidee 46 



a. Ndticina. 



1. Natica 47 



b. Neveritina. 



2. Neverita 48 



3. Polinices 49 



4. Mammilla 49 



5. Cervina 50 



6. Naticina 50 



7. Stomatia 50 



8. Amaura 51 



Fam. 19. Neritopsidte 51 



1. Neritopsis 51 



Fam. 20. Ianthinidce 51 



1. Ianthina 51 



2. Recluzia -.. 52 



Fam. 21. Scalariadce 52 



1. Scalaria 53 



II. Iniophthalma 53 



A. Ptenoglossa 54 



Fam. 22. Acteonidte 54 



1. Acteon 54 



2. Solidula 55 



3. Monoptygma 55 



B. Tsenioglossa 56 



Fam. 23. Cerithiopsidce 56 



1. Cerithiopsis 56 



C. Gymnoglossa 57 



Fam. 24. Pyramidellidce 57 



1. Obeliseus 57 



2. Pyramidella 57 



-3. Odostomia 57 



4. Chemnitzia 58 



5. Eulima 69 



6. Nisso 60 



7. Leiostraca 60 



8. Menestho 61 



Page 



9. Aclis 61 



10. Hyala 61 



11. Stylina 61 



12. Entoconcha 62 



Fam. 25. Arcltitectomidee 62 



1. Architectoma 62 



2. Torinia 63 



3. Bifrontia 63 



Fam. 26. Tylodinada 63 



1. Tylodina... 63 (see p. 203) 



Subord. III. Rosthifera ... 64 



I. Platypoda 64 



I.-Podophthalma 64 



Fam. 1. AmpullariadcB 64 



1. Pachystoma 65 



2. Asolene 65 



3. Marisa 65 



4. Ampullaria 65 



5. Pomella 67 



6. Lanistes 68 



7. Meladomus 68 



II. Edriophthalma 68 



A. Cryptocochlea 68 



Fam. 2. Amphiperasidm 68 



1. Amphiperas 69 



2. Calpumus 69 



3. Ultimus 69 



4. Radius 69 



Fam. 3. Cypraadce 70 



1. Cypraa 71 



2. Aricia 72 



3. Naria 72 



4. Trivia 72 



5. Luponia 73 



6. Cyprseovula 73 



7. Erato 73 



Fam . 4 Pediculariada 74 



1. Pedicularia 74 



Fam. 5. Aporrhaida 75 



1. Aporrhais 75 



2. Struthiolaria 76 



3. Pelicaria 77 



4. Trichotropis 77 



Verena (from p. 44). 



5. Calcarella 77 



6. Sinusigera 77 



