Sigilaria or Sigillaria: How To spell?
The word Sigilaria is misspelled against Sigillaria, a noun meaning "Little images or figures of earthenware exposed for sale, or given as presents, on the last two days of the Saturnalia; hence, the last two, or the sixth and seventh, days of the Saturnalia."
Sigillaria has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings sigi & aria which should not be misspelled with single 'L'
Wrong Spelling:  sigi-l-aria  Correct Spelling:  sigi-ll-aria 
Find more wrongly spelled words of Sigillaria to spell it well.