Apralios is a mixed a priori / a posteriori conlang which was created by Christopher Mules in 1999. It is a fictional language which was made for the connation of Apralos. How well-developed the language became is unknown, as the author began a re-vamp around 2005 and deleted much of the information on the associated website in preparation for uploading "newer" content. The newer content is unavailable.
What is known is that the language has a fairly complex system for declining nouns, a unique script, and at one point had a useful amount of vocabulary.