THE 



YOUNG CONCHOLOGISrS 



UNIVALVES. 



CONTAINING 



DESCRIPTIONS OF SIX HUNDRED SPECIES, 



AND 



JllustrateD 6p wang jFigures. 



By SYLVANUS HANLEY, 



OF WADHAM COLLEGE. (^ 



^ze 



/7/ 



LONDON: 

 JAMES ERASER, REGENT STREET. 



1840. 



