PRINCIPAL AUTHORS REFERRED TO. 



Adanson — Hist. Nat. du Senegal. 



Alder — Land and Fresh-water Shells of Northumberland, (in 

 Newcastle Transactions) ; On the Land and Fresh-water 

 Shells of Great Britain, (Mag. of Zool. and Bot. v. 2.) 



Adams — Memoir in Linn. Trans, vol. 3. 



Basterot — Desc. Geol. du Bassin tertiare du Sud-Oest de la 

 France, (Mem. Soc. Nat. Paris, torn. 2.) 



Brard — Coquilles de Paris. 



Blainville — Manuel de Malacologie. 



Brown — Illustrations of British Conchology. 



Brocchi — Conchologia Fossile Sub-Apennina. 



Chiagi — Memorie suUa storia e notomia degli animali senza ver- 

 tebre del regno di Napoli. 



CoLLARD DE Cherres — Shells of Finisterre, (in Actes de la 

 Soc. Linnaenne de Bordeaux, i. 4.) 



Cuvier — Regne Animal; Mem. pour Servir, &c. 



Deshayes — On Dentalium, (Mem. Soc. Nat. de Paris, i. 2.) 



Donovan — British shells. 



Draparnaud — Hist. Nat. des Mollusques terrest. et fluv. de la 

 France. 



DiLLWYN — Descriptive Catalogue. 



Fabricius (Otho) — Fauna Groenlandica. 



Ferussac — Hist. Nat. des. Mollusques terrest et fluv. 



Freminville — On Rissoa, (Bull. Soc. Phil. 1814.) 



Fleming — British Animals, article *' Conchology" in Edinburgh 

 Encyclopedia, &c. 



Gray — Papers in Zoological Journal, &c. 



Grateloup — Mollusques de Dax, (Actes Soc. Lin. Bord.) 



Jeffries — On the British Pulmonebranchous Mollusca, (in 

 Lin. Trans, vol. 16.) 



Jenyns — On Pisidium, (in Cambridge Philosophical Transac- 

 tions.) 



KicKX — Synopsis Molluscorum Brabantiae. 

 Lowe — Papers in Zoological Journal. 



