You have plenty of lead time for this anthology call as the reading period doesn't open until January 1, 2014 and ends June 1, 2014. Editor Lincoln Crisler has posted the call for "That Hoodoo, Voodoo, That You Do". He's looking for Horror stories of 3000 to 5000 words that involve dark rituals either researched or totally made up. The anthology will be be published by Angelic Knight Press and payment is split royalties. You can find all the details here.
Hat tip to darkmarkets.com