sentences:  Even though this would not justify a new replacement name under the Code's rules, the author believed that a new name was necessary and gave an expressed statement concerning the act of replacing.So the name "P. angolana" was made available at this occasion, and is an objective synonym of "P. brasiliensis".A new replacement name can only be used for a taxon if the name that it replaces cannot be used, as in the example above with the snail and the spider, or in the other example with the Italian and the Bolivian snail.