Florida State Board of Administration, Tallahassee, plans to fill the position of departing CIO David Villa internally, said Michael P. McCauley, director of investment services and communications for the $153 billion fund. "We're not doing a search," Mr. McCauley said, adding fund officials have just started identifying internal candidates. No interim CIO has been named. Mr. Villa will stay on until at least late May to assist in the transition, Mr. McCauley said. Mr. Villa was named CIO of the $83.1 billion State of Wisconsin Investment Board, Madison, effective June 5.