Was it illegal not to register children in the 1890's?
Yes - parents had a legal obligation to register births.
It does look to me as though James and Annie did not marry, for some reason. Perhaps one or both was previously married (if so, most likely Annie; James was still single and with his mother in the 1881 census, and baby Mary was b abt 1882). Or perhaps there was a religious incompatibility which meant they did not go up the aisle.
There must be at least a possibility that one or more of Annie's children was not fathered by James, but by either a previous husband or an unmarried partner. Whether or not fathered by James, if not born within a marriage to James they may well have been registered in another surname (Annie's maiden or previous married name) and with given names as common as Mary and Ann/Anne/Annie it's well nigh impossible to narrow down candidate registrations.
This is indeed a tough one - will keep thinking on it.
Anna
