Mystery and Horror LLC has posted a new anthology call for "Mardi Gras Murder". They are looking for mystery short stories of 2000 to 8000 words set during Mardi Gras. Payment is one copy and a $5 advance against royalties. The submission period begins on October 21 and ends January 5, 2014. That gives you plenty of time to get your stories polished. You can find the details here.
If you scroll down a bit you'll find that their anthology "Undead of Winter" is still open for submissions until October 1.