Possible Clues:

• Jaguar, say, inhabits many fens in part of Mexico
• N. Mexican peninsula
• Mexican state currency protecting the queen, say
• State money in China used to trap tiger?
• In Mexico, peninsula having whip-round for foreign currency? On the contrary
• Your charts regularly omitted an area of Mexico
• Alcoholic drink
• Mexican peninsula where Mayas lived
• Home of Chichén Itzá
• Peninsula in Central America extending into the Gulf of Mexico