Gorgonia or Gorgoneia: How To spell?

The word Gorgonia is misspelled against Gorgoneia, which is plural of "Gorgoneion"

Word contains consecutive vowels 'EI' in between alphabets gorgon & a is misspelled as 'I' as letter 'E' is phonetically ignore
Wrong Spelling:  gorgon-i-a 
Correct Spelling:  gorgon-ei-a 
Find more incorrect spellings of Gorgoneia to spell right way.