| ROM COL, CHI, ACAD. SCIENCES SHELLS COPYRIGHT 1900, BY 
A W.MUMFORD, PUBLISHER, CHICAGO NATURE STUDY PUB, CO,, CHICAGO. 
<r ( Reduced !/v. 
328 
OZ 
Root Murex Branched Murex 
Burnt Murex Apple Murex Horned Murex 
Purple Murex Venus Comb Two-colored Murex 
