XVI COXTKNTS. 



V M.I: 



Adanson, 610 — 613 : Qeoffroy and Milller, 513, 614: Linnnus, 616, 

 616: Bruguiere, &o., 517 : Humphrey, 517 : Cuvier, 518— -521 ; Poli, 

 his classification of bivalves, 618, 519. .... V.)-2 



LETTEB XXVIL 



History of Conchology continued: Cuvier's firsl classification 

 of the Mollusca, 522, 523 : Lamarck, his first system, 524 — 

 626: Cuvier in L800, 626, 527: M. de Roissy, 628: Defrance, 628 : 

 Lamarck in L809, 629— 631 ; and in L816, 531—638: his system of 

 the Tunicata,532 ; of the Conchifera, 533 i of the Mollusca, 634 -538: 

 Cuviei in L817 and 1830, 638: M. de Ferussac, 539 : M. de Blain- 

 ville, his system, 539 — 547 : of the Cephalopods, 5 10 : of the Gastero- 

 pods, 542 — 645 : of the Acephales, 546 — 547: of the Malentozoaria, 

 ."> IT : system of Latreille, 647 — 549: of Schweigger, 550 — 554: con- 

 dition of Conchology in Britain, 654 : Leach, 565 : Fleming, 665 — 660: 

 .1. E. Gray, 560 — 567: remarks on his system, 667 — 569: classifica- 

 tions of the Tunicata, 569 : of M. Savigny, 670, 671. . . . 622 



LETTEB XXVIII. 



History of Conchology continued: Cuvier, 572 : Macleay, 573: 

 Swainson, his system, 573 — 57!) : Sander Rang, 57!) — 583 : Cephalo- 

 pods, 683 : Do Haan and D'Orhigny, 683: Owen, his classification, 

 584,585: Pteropods, 585 : J. E. Gray, 585, 686 : Gasteropods, 586: 

 Sander Kan,-. 586, 587 : J. E. Gray, 587—689: Milne-Edwards, 589 

 —693: Emile Blanchard, 593, 694.— The Nudihranches, 694 : their 

 arrangement by M. de Quatrefages, 595, 500 : Phlebehterata, 596 : l>v 

 Allnian, 597, 698: by Alder and Hancock, 698, 699 : Acephala, 699 : 

 the rank of the Brachiopoda, 599 : Deshayes' classification of the 



Conehilera, 5!)!)— (>0-2._The Tunieata, 602: their rank and classifica- 

 tion, by Macleay, 003,604: by Milne-Edwards, 604 : by Forbes and 

 Goodsir, 605 : Conclusion, 605, 606. .... .572 



