vA /.A^A 



FIGURES /^^^^ 



OF 



MOLLUSCOUS ANIMALS, 



SELECTED FROM 



VARIOUS AUTHORS. 



ETCHED FOR THE USE OF STUDENTS. 

 BY 



MARIA EMMA GRAY. 



VOL. IV. 



EXPLANATION OF PLATES AND LIST OF GENERA. 



LONDON: 



LONGMAN, BROWN, GREEN AND LONGMANS 

 PATERNOSTER ROW. 



1S59. 



