Mollusca & shells
By: by Augustus A. Gould ... ; with an atlas of plates
Series: United States Exploring Expedition : during the years 1838, 1839, 1840, 1841, 1842, under the command of Charles Wilkes, U.S.N -- vol. 12; United States Exploring Expedition (Series) -- v. 12. 
Publisher: Printed by C. Sherman
Place of publication: Philadelphia
Number of pages: 510
Other titles: Mollusca and shells.
Notes: Atlas vol. has title: Mollusca and shells; lacks series vol. designation, publisher's statement varies slightly

Addenda ... p. 499-509.