Editor's note: This version updates the Mohegan Sun contribution figures.

Slot-machine revenues at the casinos declined sharply again last month, falling by 12.1 percent at Foxwoods Resort Casino and by 11.1 percent at Mohegan Sun.

Foxwoods, including MGM Grand at Foxwoods, reported its slots "win" -- the amount the casino kept from wagers after paying out prizes -- totaled $40.7 million in January, down from $46.3 million in the same month the previous year. Mohegan Sun's win of $47.1 million was down from $53.0 million in January 2012.

Foxwoods has now experienced double-digit declines in five consecutive months. Mohegan Sun's win has plunged by double digits in three of the last five months. Neither casino has recorded a year-over-year gain since December 2011.

Foxwoods sent $10.6 million of its January slots win to the state, while Mohegan Sun's contribution for the month was $11.8 million.