Acta Soc. Lat. Halensis
[Reuss, v.9, p.4 cites Semester I.]
This abbreviation is similar to
Acta Soc. Lat. Jenensis, which stands for
Acta Societatis Latinae Ienensis.
So it is reasonable to guess that the title might include the following
Acta Societatis Latinae Halensis.
But we have not been able to locate such a title in the
GBV German Union cat.
Perhaps we need to try library catalogues near or in the city of Halle.