Xiy INDEX. 



Order VL— PECTINIBRANCHIATA— fco7i/mMec/J. 



Murex, 73 



Murex proper, 73 

 Brontis, 73 

 Typhis, 73 

 Chicoracea, 73 

 Aquilla, 73 

 Lotorium, 73 

 Tritonium, 74 

 Trophona, 74 

 Ranella, 74 



ApoUes, 74 

 Fusus, 74 



Fusus proper, 74 

 Lathira, 74 

 Pleurotoma, 74 

 Pyrula, 75 



Fulgur, 75 

 Fasciolaria, 75 

 Turbinella, 75 

 Strombus, 75 



Strombus, 75 

 Pterocera, 76 

 Rostellaria, 76 

 Hippocrenes, 76 



Order VII.— TUBULIBRANCHIATA,76 



Vermetus, 76 

 Magilus, 77 

 Siliquaria, 77 



Order Vlll.— SCUTIBRANCHIATA, 78 



Halyotis, 78 



Halyotis proper, 78 

 PastoUae, 78 

 Stromatia, 79 



FissurcUa, 79 



Emarginula, 79 



Parmophorus, 79 



Order IX.— CYCLOBRANCHIATA, 80 



Patella, 80 

 Chiton, 80 



CLASS IV.— ACEPHALA. 



Order I.— ACEPHALA TESTACEA,82 



Fam. I. — Ostracea, 83 



Ostracita, 83 



