For anyone looking for the watch order:
Female Prisoner 701: Scorpion (1972)
Female Prisoner Scorpion: Jailhouse 41 (1972)
Female Prisoner Scorpion: Beast Stable (1973)
Female Prisoner Scorpion: Grudge Song (1973)
(Starring Meiko Kaji, those are the original adaptations of the manga.)

after that two more movies were made in 1976 and 1977:
New Female Prisoner 701: Scorpion
New Female Prisoner Scorpion: Tokushu-bo X

and then we have the remakes of the first and second movies, released in 2011 and 2012
Female Prisoner No. 701 ~SASORI~
Joshuu 701 Gou 2: Sasori Gaiden ~ Dai 41 Zakkyobou