  We model a core-shell nanowire (CSN) by a cylindrical surface of finite
length. A uniform magnetic field perpendicular to the axis of the cylinder
forms electron states along the lines of zero radial field projection, which
can classically be described as snaking states. In a strong field, these states
converge pairwise to quasidegenerate levels, which are situated at the bottom
of the energy spectrum. We calculate the conductance of the CSN by coupling it
to leads, and predict that the snaking states govern transport at low chemical
potential, forming isolated peaks, each of which may be split in two by
applying a transverse electric field. If the contacts with the leads do not
completely surround the CSN, as is usually the case in experiments, the
amplitude of the snaking peaks changes when the magnetic field is rotated,
determined by the overlap of the contacts with the snaking states.
