

UNITED STATES 



EXPLORING EXPEDITION. 



DURING THE YEARS 



1838, 1839, 1840, 1841, 1842. 



UNDER THE COMMAND OF 



CHARLES WILKES, U. S. N. 



ATLAS. 



CRUSTACEA. 



BY 



JAMES D. DANA, LL.D., 



MEMBER OF THE SOC. CMS. NAT. CUR. OF MOSCOW; THE SOC. PHILOMATHIQUE OF PARIS; THE 



GEOLOGICAL SOCIETY OF LONDON; THE AMERICAN ACADEMY OF ARTS AND SCIENCES 



AT BOSTON; THE ACADEMY OF NATURAL SCIENCES AT PHILADELPHIA, ETC. 



BY AUTHORITY OF CONGRESS. 



PHILADELPHIA: 



C. SHERMAN, PRINTER. 



185 5. 



J><V 



INVERTEBRATE 

 \ ZOOLOGY 



Crustacea 



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