The present tables list the measured ␥-transition energies E ␥ of 248 nuclear superdeformed bands for 90 nuclei found in the mass-60, -80, -130, -140, -150, -160, and -190 regions. Data were collected up to July 1998. The corresponding rotational frequencies , dynamic moments of inertia (2) , measured or suggested spin assignments I and associated static moments of inertia (1) , available transition quadrupole moments Q t or average moments Q 0 , M1 or E1 interband transition energies and parities, and g-factors are also tabulated. For the user's convenience, a plot of (1) and (2) versus rotational frequency is given with the data table for each superdeformed band.

A new microscopic nuclear mass formula is derived from the fermion dynamical symmetry model. A Strutinsky-like spherical single-particle shell correction is introduced, but the principle part of the pairing and deformation are treated microscopically through the pairing and quadrupole-quadrupole twobody interaction, without introducing a deformed mean-field or BCS approximation. The results are in excellent agreement with existing mass data in the actinide region and suggest the possibility of a new region of superheavy elements near Z = 114 and N= 164. This mass formula has been utilized in the study of r processes in astrophysical problems with encouraging preliminary results.PACS number(s): 21.60.Ev, 21.60.Fw, 21.10.Dr

43 (1992). The present tables list the measured g-transition energies E g of 131 nuclear superdeformed bands for 51 nuclei found in the mass-80, -130, -140, -150, and -190 regions. Data were collected up to July, 1995. The corresponding rotational frequencies v, dynamical moments of inertia J (2) , tentatively suggested spin assignments I, associated static moments of inertia J (1) , and available transition quadrupole moments Q t (or average moments Q 0 ), M1 or E1 interband transition energies, and g-factors are also tabulated. For the user's convenience, a plot of J (1) and J (2) versus rotational frequency v is given with the data table for each superdeformed band.