How to enumerate SQL Server role members with Powershell?

I have a powershell script to enumerate the members of SQL Server role members using powershell. I have this script

<... cut the connection details for brevity, 
$SqlInstance is a Microsoft.SqlServer.Management.Smo.Server object ...>

$db = $SqlInstance.Databases[$Database]

foreach ($role in $db.Roles)
{
    foreach ($memberlist in $role.EnumMembers)
    {
        foreach ($member in $memberlist)
        {
            Write-Host ($member)
        }       
    }
}

I get output like this:

System.Collections.Specialized.StringCollection EnumMembers()
System.Collections.Specialized.StringCollection EnumMembers()
System.Collections.Specialized.StringCollection EnumMembers()
System.Collections.Specialized.StringCollection EnumMembers()
System.Collections.Specialized.StringCollection EnumMembers()
System.Collections.Specialized.StringCollection EnumMembers()
System.Collections.Specialized.StringCollection EnumMembers()
System.Collections.Specialized.StringCollection EnumMembers()
System.Collections.Specialized.StringCollection EnumMembers()
System.Collections.Specialized.StringCollection EnumMembers()

How do I actually see the role members? Confused.