Coryphau or Coryphei: How To spell?

The word Coryphau is misspelled against Coryphei, which is plural of "Corypheus"

Word ends with consecutive vowels 'EI' preceded by alphabets 'coryph' is misspelled as 'AU'
Wrong Spelling:  coryph-au 
Correct Spelling:  coryph-ei 
Check more misspelled words of Coryphei to spell it correct.