Vlll CONTENTS. 



PAGE 



SECTION B. HOLOSTOMATA 122 



Fam. I. Naticida. Natica, Sigaretus, Lamellaria, Narica, 



Yelutina 122 



Fam. II. Pyramidellida. Pyramidella, Odostomia, Chem- 



nitzia, Stylina, Loxonema, Macrocheilus . . / .' . . . 125 



Fam. Ill, Cerithiadce. Cerithium, Potamides, Nerinaea, 



Fastigiella, Aporrhais, Struthiolaria 127 



Fam. IV. Melamadae. Melania, Paludomus, Melanopsis... 130 

 Fam. V. TurritelliddB. Turritella, Aclis, Csecum, Verme- 



tus, Siliquaria, Scalaria 132 



Fam. VI. Litorinidae. Litorina, Solarium, Phorus, Lacuna, 



Litiopa, Eissoa, Skenea, Truncatella, ? Lithoglyplius .,, 134 

 Fam. VII. Paludinidte. Paludina,Ampullaria, Amphibola, 



Yalvata 138 



Fam. VIII. Neritidae. Nerita, Pileolus, Neritina., Navicella 140 

 Fam. IX. Turbinidce. Turbo, Phasianella, Imperator, Tro- 



chus, Eotella, Monodonta, Delphinula, Adeorbis, Euom- 



phalus, Stomatella, Broderipia 142 



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



tomaria, Murchisonia, Trochotoma, Cirrus, lanthina 146 



Fam. XI. Fissurellid(B. rissurella, Puncturella, Simula, 



Emarginula, Parmophorus 149 



Fam. XII. Calyptraidce. Calyptrsea, Crepidula, Pileopsis, 



Hipponyx 151 



Fam. XIII. PatellidcB. Patella, Acmsea, Gadinia, Sipho- 



uaria 153 



Fam. XIV. Dentaliada. Dentalium 156 



n. XV. CUtonida. Chiton . . 156 



