Ushiro-tate-shiho-gatame
(rear or lengthwise four quarters hold)

"Tori brings both of his arms under Uke's armpits and forces Uke's arms upwards, tight against the side of Uke's head. Tori clasps his hands onto the front of Uke's jacket to maintain the hold. Tori thrusts his legs, down and then out, between Uke's legs. Thus removing any chace of Uke using them to turn himself over. "