  We consider complex Fenchel-Nielsen coordinates on the quasi-Fuchsian space
of punctured tori. These coordinates arise from a generalisation of Kra's
plumbing construction and are related to earthquakes on Teichmueller space.
They also allow us to interpolate between two coordinate systems on
Teichmueller space, namely the classical Fuchsian space with Fenchel-Nielsen
coordinates and the Maskit embedding. We also show how they relate to the
pleating coordinates of Keen and Series.
