Gullible residents of Midtown are at risk if they swallow the bait arriving in the mail this week from a writer posing as an exile of the African country of Ivory Coast. In the letter, which seems to arrive at homes which still have a landline telephone with a listed address, the writer offers to share 30 per cent of $77.8 million if the sucker who gets the letter helps “my mother and myself” to get the cash out of some sort of political limbo. The recipient is invited to get in touch with the man who claims he is the son of a former president of Ivory Coast, by email or telephone, in the United Kingdom. The letter is postmarked in Malaysia. .