The doc http://code.google.com/chrome/devtools/docs/elements.html says it supports XPath or CSS selectors, but when I tried, didn\'t seem to work for me.
Any one knows
For xpath searches use $x('xpathSelector'). For a css selector use $('cssSelector').
$x('xpathSelector')
$('cssSelector')
However, this last selector returns only the first matching element. If you want to see all matching elements go for $$('cssSelector')
$$('cssSelector')