Correct spelling for the English word "megalanea" is [mˌɛɡəlˈe͡ɪni͡ə], [mˌɛɡəlˈeɪniə], [m_ˌɛ_ɡ_ə_l_ˈeɪ_n_iə] (IPA phonetic alphabet).
A name given to a gigantic sub-fossil land-lizard, discovered in the Post-tertiary deposits of Australia, and allied to the existing lace-lizard.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.