Is it possible to combine both a class selector and an attribute selector with jQuery?

For example, given the following HTML:

<TABLE>
  <TR class="myclass" reference="12345"><TD>Row 1</TD></TR>
  <TR class="otherclass" reference="12345"><TD>Row 2</TD></TR>
  <TR class="myclass" reference="12345"><TD>Row 3</TD></TR>
  <TR class="myclass" reference="54321"><TD>Row 4</TD></TR>
</TABLE>

What would be the selector I can use to select rows 1 and 3 only?

I have tried:

$(".myclass [reference=12345]") // returns nothing

$(".myclass, [reference=12345]") // returns all 4 rows (yes, I know the comma means 'or')

I'm sure the answer is very simple and I have tried searching the jQuery forums and documentation but I can't seem to figure this one out. Can anyone help?

javascript jquery jquery-selectors
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