Carcases or Carcasses: How To spell?
The word Carcases is misspelled against Carcasses, which is plural of "Carcass"
Carcasses has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings carca & es which should not be misspelled with single 'S'
Wrong Spelling:  carca-s-es  Correct Spelling:  carca-ss-es 
Explore spell check of Carcasses to spell without errors.