What is the difference between אריים and אריות?

QUESTION: In Melachim where Shlomo Ha Melech’s throne is described – there is a plural form of Ari used “arieem”. This is not the normal plural form – usually it’s “ariot”. I have asked other Rebbeim this question and no one knows the reason. Any ideas? I don’t think this plural form “arieem” is used anywhere else…

Thanks, Ari Z.