NEW YORK, Nov 10 (Reuters) - U.S. Treasury debt prices pared gains on Tuesday and the 30-year bond turned negative in price following the auction of $25 billion of 10-year Treasury notes.

Following the sale, benchmark 10-year Treasury notes US10YT=RR were trading flat in price to yield 3.49 percent. The high yield in the auction was 3.47 percent.

The 30-year bond US30YT=RR was 9/32 lower to yield 4.42 percent from 4.40 percent late on Monday. (Reporting by Chris Reese: Editing by Diane Craft)