Deserializing XML in Object using DataContractSerializer

I have the following xml:

<ArrayOfString>
    <stringValues>
        <stringvalue>teste1</stringvalue>
        <stringList> 
             <stringText>stringList1</stringText>                                   
        </stringList>
    </stringValues>
</ArrayOfString>

My contract is as following:

[KnownType(typeof(StringList))]
[DataContract(Name = "stringValues", Namespace = "")]
public class StringValues
{

    [DataMember(Name="stringvalue",Order=1)]
    public string stringvalue { get; set; }

    [DataMember(Name="stringList",Order=2)]
    public StringList stringList { get; set; }
}

[CollectionDataContract(ItemName = "stringText")]
public class StringList : List<string>
{

}

And the code used to deserialize is:

var testexml = @"<ArrayOfString>
                            <stringValues>
                                <stringvalue>teste1</stringvalue>
                                <stringList> 
                                    <stringText>stringList1</stringText>                                   
                                </stringList>
                            </stringValues>
                         </ArrayOfString>";

        XmlDictionaryReader stringsReader = XmlDictionaryReader.CreateDictionaryReader(XmlReader.Create(new StringReader(testexml)));
        DataContractSerializer ArrayOfString = new DataContractSerializer(typeof(List<StringValues>), "ArrayOfString", "");
        var strings = ArrayOfString.ReadObject(stringsReader);

When i run it the stringList property should have one item, but instead it has zero items. I belive, there is something wrong in my contract. Can anyone help?

Thanks in advance!