I looked them up on RxList, so I could verify it in 'print' for you - but they aren't there. My guess, is that they are a newer generic, or a generic that is not seen as often. (Because RxList is pretty comprehensive they usually have pretty much every pill identiffication) -

But like I said, take my word for it - I have had the same Tylenol #3's in the (not so distant) past....