  In 2006, Chapoton defined a class of Tamari intervals called "new intervals"
in his enumeration of Tamari intervals, and he found that these new intervals
are equi-enumerated with bipartite planar maps. We present here a direct
bijection between these two classes of objects using a new object called
"degree tree". Our bijection also gives an intuitive proof of an unpublished
equi-distribution result of some statistics on new intervals given by Chapoton
and Fusy.
