Moluscan or Molluscan: How To spell?
The word Moluscan is misspelled against Molluscan, a noun meaning "A mollusk; one of the Mollusca."
Molluscan has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings mo & uscan which should not be misspelled with single 'L'
Wrong Spelling:  mo-l-uscan  Correct Spelling:  mo-ll-uscan 
Check more misspelled words of Molluscan to spell it correct.