21 Ditto — -free valve p. 2 



22 Clavagella Australis p. 2 

 2:> Aspergillum Vaginiferum 



P .i 



24 Panopaea Australis p. 18 



25 Galeomna Aurantia (Psam- 



mobia A. p. 58 

 2(5 Pholas Truncata p. 6 



27 Crassina Castanea p. 88 



28 Solen Costatus p. 15 



29 Venerupis Exotica of Sow- 



erby p. 54 



30 Pholas Acuminata p. 8 



31 Crassatella Rostrata p. 36 



32 Pandora Trilineata p. 49 

 38 Anatina Leana p. 24 



34 > Corbula Contracta p. 47 



35 I Donax Fabagello p. 83 





36 

 37 



38 

 39 



Donax Fossor p. 85 

 Gastrochaena Mytiloides 

 p. 10 

 Tellina Tenera p. 65 

 Tellina Polita p. 65 



40 



41 

 42 

 43 

 44 

 45 

 46 

 47 



48 

 49 



50 

 51 

 52 

 53 



i 



'54 



i 



55 

 56 



Gastrochaena Truncata 

 p. 10 



Galeomna Turtoni p. 59 

 Gastrochaena Ovata p. 10 

 Pholas Californica p. 8 

 Pholas Campechensis p. 6 

 Lucina Rugifera p. 79 

 Anatina Elliptica p. 23 

 Lutraria (Lepton) Squa- 

 mosa p. 28 

 Kellia Rubra p. 43 

 Teredo Cornifbrmis (a copy 

 from Favanne of the figure 

 cited by Lamarck) p. 4 

 Teredo Bipennata p. 4 

 Xylophaga Globosa p. 10 

 Thracia Similis p. 22 

 Myodora Ovalis (Anatina 



O. p. 25) 

 Aspergillum Novae Zelan- 



diae p. 2 

 Mesodesma Arctata p. 39 

 Lutraria Cottardi p. 28 



