Tin CONTENTS. 



PAGE 



Section B. Holostomata 122 



Fam. I. Naticidce. — Natica, Sigaretus, Lamellaria, Narica, 



Velutina 122 



Tarn. II. Fi/ramidelUda. — Py'ramidella, Odostomia, Cliem- 



nitzia, Stylina, Loxouema, Macroclieilus 125 



Fam. III. CentUada. — Cerithium, Potamides^ Neriusea, 



Pastigiella, Aporrhais, Struthiolaria 127 



Fam. IV. Melaniadce. — Melania, Paludomus, Melanopsis... 130 

 Fam. V. Turritellidce. — Turritella, Aclis, Csecum, Verme- 



tus, Siliquaria, Scalaria 132 



Fam. VI. Litorinidde . — Litorina, Solarium, Phorus, Lacuna, 



Litiopa, Eissoa, Skenea, Truucatella, ? Lithogljplius . . , 134 

 Fam. VII. Faludimd(S. — Paludina, Ampullaria, Amphibola, 



Valvata 138 



Fam. VIII. NeritidcB. — Nerita, Pileolus, Neritina, Navicella 140 

 Fam. IX. Turbi?iidce. — Turbo, Pliasianella, Imperator, Tro- 



clms, Rotella, Monodoiita, Delpliinula, Adeorbis, Euom- 



phalus, StomateUa, Broderipia 142 



Fam. X. Haliotis. — Haliotis, Stomatia, Scissurella, Pleuro- 



tomaria, Murchisonia, Trocliotoma, Cirrus, lauthiua 146 



Fam. XI. Fissurellidce. — Fissurella, Puncturella, Rimula, 



Emarginula, Parmophorus 149 



Fam. XII. CalyptraidcB. — Calyptrsea, Crepidula, PUeopsis, 



Plipponyx 151 



Fam. XIII. PaieUid(B. — Patella, Acmaea, Gadiuia, Sipho- 



iiaria 153 



Fam. 'XIV. Dentaliada. — Dentaliura 156 



Fam. XV. CJiitonidie.'-QhiiQTi 156 



