BIBLIOGRAPHY 



NOHTII AMERICAN CONCHOLOGY. 



£«ea, Isaac. — Mr. Lea having complained that full justice 

 had not been done him by the omission in this work of certain 

 explanations of the date of publication of some of his species 

 of shells, the Tables in his " Rectification" are here reprinted 

 from the Proceedings of the Academy of Natural Sciences for 

 Dec. 1854. 



(JOSEPH HENRY.) 



Page. 



9 

 9 



Unio lanceolatus Lea. 

 irroratua Lea} 



10 Unio occidens Lea. 

 1ft rubiginosus Lea. 



1ft heterodon Lea. 



10 multiradiatus Lea. 



10 securis Lea. 



Dated by 

 Mr. Conrad. 

 1832. 

 '1852. 



Published in memoir read 



1832? 

 1832. 

 1833. 

 1832. 

 1832. 



before and deposited with 

 the Am. Phil. Soc. Nov. 2, 

 1827, and printed in Trans. 

 Ill, 259. Distributed early 

 in 1828.' Noticed in Silli- 

 man's Jour. Oct. 1829, and 

 *• the Trans, cited for 1827. 

 Published in memoir read 

 before and deposited with 

 the Am. Phil. Soc. March 6, 

 1829, and printed in Trans. 

 Ill, 401. Distributed in 

 May or June, 1829. The 

 receipt of it, with com- 

 ments, is acknowledged in 

 a letter from Cincinnati, 

 June 27, 1829, and it is 

 noticed in Silliman's Jour. 

 XVI. 1829. 



' The four other species of this memoir are piven by Mr. Conrad ■withont any date. 



' This may be a typographical error and intended to be 1832, the same as lanceolatus 

 above it. Giving Mr. Conrad the benefit of this, it -will still be found that he has dated 

 tliese two species/i'e years after thoy were read to the Society, /our years after they were 

 printed and issued, and two years after the date of the title page of the whole volume. 



* A correspondent in Cincinnati, under date of April 2.'), 1S28, acknowledges the receipt 

 of this paper, and comments on the descriptions and the plates, and particularly the 

 auatomical parts. Ho had received impressions of the plates in the previous December. 



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