Corigenda or Corrigenda: How To spell?
The word Corigenda is misspelled against Corrigenda, which is plural of "Corrigendum"
Corrigenda has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings co & igenda which should not be misspelled with single 'R'
Wrong Spelling:  co-r-igenda  Correct Spelling:  co-rr-igenda 
Find more incorrect spellings of Corrigenda to spell right way.