CATALOGUE OF AUTHORS. 6 



the Philadelphia Academy, have been consulted by me, 

 as well as those of my father which are in my own collec- 

 tion. 



I have endeavored to include all the information on this 

 subject which has been published prior to January 1st 

 1859. In subsequent supplements I shall endeavor to pre- 

 sent all the additional information elicited by future re- 

 search. To this end, criticisms on the opinions I have 

 advanced are solicited, and suites of local species from 

 every part of the country. 



The Auriculacea and the Aciculacea of the United 

 States are added to the families described in the " Mol- 

 lusks." This first attempt to describe them has been at- 

 tended by many disadvantages, and is offered with great 

 hesitation as necessarily quite incomplete, 



Burlington, N. J., August, 1859. 



The following list contains the additional works referred 

 to in the text. 



N. B. The date given ,is always that of the separate portions of any periodical 

 work; when it is impossible to ascertain this, the date of the general title is 

 given. 



Adams, C. B. Contributions to Couchology. New York, 1849 - 52. 



Natural History of the Red River of Louisiana. Washington, 



1853. 



Adams, Henry and Arthur. The Genera of Recent MoUusca, arranged accord- 

 ing to their Organization. London. Pulmonifera (pts. xix - xxiii). Jan. - Sept. 

 1855. 



Amtlicher Bericht iiber die 24te Versammlung Deutscher Naturforscher und 

 Aerzte in Kiel, Sept. 1846. Kiel, 1847, pp. 113, 114, 122, 123, 220. 



Annals of the Lyceum of Natural History of New York, 1858. 



Anton, H. E. Verzeichniss der Conchylien, &c. 1839. 



Billings, E. Notes on the Natural History of the Mountain of Montreal. From 

 the Canadian Naturalist and Geologist. May, 1857. 



Binney, W. G. Descriptions of American Land Shells. In Proceedings of 

 Academy of Natural Sciences of Philadelphia, 1857, p. 18. Febr. 1857. 



Notes on American Land Shells. In same, ii. Oct. 1857; iii. 



May, 1858; iv. Nov. 1858. 



Description of two supposed new Species of American Land 



Shells. Proc. of Boston Soc. Nat. Hist. VI. 155. April, 1857. 



