19 6 AUTHORITIES. 



MICHELOTTI. Monographia del Genere Murex, 4to, 1841. 



MONTAGUE. Testacea Britannica, 4to, 1803, and Supplement 1808. 



MONTFORT (Denys.) Conchyliologie systematique, et Classification methodique des Coquilles, Svo, 1808-10. 



MOLLEE (H. P. C.) Index Molluscorum Grcenlandise, 8vo, 1842. 



MORRIS (J.) Catalogue of British Fossils, 8vo, 1843. 



MULLER (0.) Zoologie Danicae Prodromus, 1766. 



Vermium terrestrium et fluviatilium historia, vol. i, 1773 ; vol. ii, 1774. 



NYST (P. H.) Description des Coquilles et des Polypiers fossiles des Terrains Tertiares de la Belgique, 

 4to, 1843-46. 



OLIVIER. Voyage dans 1'Empire Ottoman, 8vo, 1801-7. 



PARKINSON. An Introduction to the Study of Fossil Organic Remains, 8vo, 1822. 



Organic Remains of a Former World, 3 vols. 4to, 1804-11. 

 PAYRAUDEAU (B. C.) Catalogue descriptif et methodique des Annelides et des Mollusques de Tile 



de Corse, 8vo, 1826. 



PENNANT (T.) British Zoology, 3d edit. Svo, 1776. 



PERON et LESSUEUR. Memoires sur les Pteropodes. (Annales du Museum de Paris, torn, xv, 1810.) 

 PETIVER (J.) Opera Historiam Naturalem Spectantia, or Gazophylacium, fol. 1764. 

 PFEIFFER. Naturgeschichte Deutscher Land und Susswasser Mollusken, 4to, 1821-28. 



Monographia Heliceorum viventium, 8vo, 1847. 

 PHILIPPI (R. A.) Enumeratio Molluscorum Siciliae, 4to, vol. i, 1836. 



Id. 4to, vol. ii, 1844. 



PICTET (F. J.) Traite" elementaire de Palseontologie, ou Histoire naturelle des Animaux fossiles, 



4 vols. Svo, 1844-5. 

 POLL Testacea utriusque Sicilise, 2 vols. fol. 1791-93. 



QUOY et GAIMARD. Voyage de 1'Astrolahe (Mollusques), 2 vols. Svo, atlas fol. 95 plates, 1830. 



RANG. Manuel de 1'Histoire naturelle des Mollusques et de leurs Coquilles, ISmo, 6 plates, 1829. 

 REEVE (Lovell.) Conchologia Iconica, 11 parts, 4to, 1843-46. 



Reports of the Meetings of the British Association for the Advancement of Science, 1831-47. 

 RISSOA. Histoire Naturelle des principals Productions de 1'Europe Meridionale, 5 vols. Svo, 1826. 

 ROSSMASLER (E. A.) Iconographie der Lund und Susswasser Mollusken, xii-liv. 8vo. Dresden and 

 Leipz. 1835-44. 



SARS (M.) Beskriv. og Jagttagelser, 4to, 1835. 



SAVTGNY. Grand Ouvrage sur PEgypte. Mollusques. 1826. 



SCACCHI. Catalogus Conchyliorum Regni Neapolitani, Svo, 1836. 



SCHLOTTHETM (Baron von.) Die Petrefactenkunde, 2 vols. Svo. Gotha, 1820-22. 



SCHUMACHER (C. P.) Essai d'un nouveau Systeme des Habitations des Vers testaces, 1 vol. 4to. 



Copenhagen, 1817. 



SHEPPARD (Revett.) Descriptions of seven new British Land and Freshwater Shells, with observations 

 upon many other species ; including a List of such as have been found in the County of Suffolk. 

 (Trans. Linn. Soc. vol. xiv, 1825.) 

 SMITH (J.) On the last Changes of the relative Levels of the Land and Sea in the British Isles. (Mem. 



Wern. Soc. vol. viii, 1838.) 



On the Age of the Tertiary Beds of the Tagus. (Journ. Geol. Soc. Nov. 1847.) 

 SMITH (W.) Strata identified, 4to, 1816-19. 



