13S 



XI. Spondylus. 



XII. Chama. 



XIII. Area. 



XIV. Ostrea. 



XV. Anomia. 



XVI. Mytilus. 



XVII. Pinna. 



( Plicatula, 

 ( Spondylus. 



Cardita, 



Cypricardia, 



Isocardia, pi. viii. /. 3. 



Chama, 



Tridacna, 



Hippopus. pl.v'm.f.2. 



{Cucullsea, 

 Area, pi. viii./. 1. 

 Pectunculus, 

 Nucula. 



(Crenatulla, 

 j Perna, 



Malleus, 

 J Pedum, 

 ' Lima, 



Pecten, 



Grypha;a 



Ostrea, 



pi. xv. 



pi. iii. 



XXI. Cypraea. 



XXII. Bulla. 



XXIII. Voluta. 



' Placuna, 

 Anomia, 

 Crania, 

 Orbicula, 

 Terebratula, 

 Hyaltca. 



Saxicava, 

 Anodonta, 

 Modiola, 

 ■{ Mytilus, pi. iii. 



IAvicula, 

 Meleagrina, 

 ^ Ostrea, (some.) 



Pinna, pi. iii. 



{Liniacina, 

 Argonauta, pi. iii. 

 Carinaria. 



XIX. Nautilus. 



XX. Conus. 



f Orthocera, 

 I Nodosaria, 

 < Spirula, 

 1 Cristellaria, 

 ^ Nautilus, pi. iv. 



Conus. pi. ii. /. 5, 6. 



XXIV. Buccinum. 



XXV. Strombus. 



Cyprsea. 



Bullaea, 



Accra, 



Bulla, 

 , Bullimus, 

 < Achatina, 



Physa, 



Pyrula, (some.) 



O vula, pi. xiii. /. 1, 2. 



Terrebellum. 



' Auricula, 

 Ancilla, 

 Tornatella, 

 Turbinella, 

 Cancellaria, 

 Collumbella, 

 Mitra, pi. ii./. 1, 2. 

 Voluta, 

 Marginella, 

 Volvaria, 

 Achatina, 

 Oliva. 



Concholepas, 

 Achatina, (some.) 

 Phasianella, 

 Pleurotoma, 

 Turbinella, (some.) 

 Cancellaria, (some.) 

 Pyrula, (some.) 

 Murex, (some.) 

 Triton, 

 Cassidaria, 

 Cassis, 

 Purpura, 

 Monoceros, 

 Ilarpa, 

 Dolium, 

 Buccinum, 

 Eburna, 

 __ Terebra. 



CPirena, 

 Cerithium, (some.) 

 Pleurotoma, (some.) 

 Rostellaria, 

 Pteroceras, 

 Strombus, 

 Cassidaria, (some.) 

 Purpura. 



