Micrococi or Micrococci: How To spell?
The word Micrococi is misspelled against Micrococci, which is plural of "Micrococcus"
Micrococci has double "cc" is mispronounced as "c"Remember double 'CC' in between the strings Microco & i which should not be misspelled with single 'C'
Wrong Spelling:  Microco-c-i  Correct Spelling:  Microco-cc-i 
Find more incorrect spellings of Micrococci to spell right way.