SEVENTH YEAR OF PUBLICATION. 



28, ESSEX STREET, STRAND, LONDON, OCTOBER, 1877. 



No. 24. 



THE 



NATURAL HISTORY AND SCIENTIFIC 



Z 



CONCHOLOGY, MOLLUSCA . . . Page 2 



ICHTHYOLOGY „ 12 



REPTILIA 15 



WILLIAM WESLEY, BOOKSELLER AND PUBLISHER, 



NATURAL HISTORY AND SCIENTIFIC BOOK AGENCY, 

 28, ESSEX STREET, STRAND, LONDON. 



Agency of the Smithsonian Institution. 



