Kali Mera, Pantazi-Sensei:
After my last disasterous interpretation of which throw you meant (my mistaking a judo Seoi Nage for an aikido Shiho Nage), I really ought to hesitate....
Oh come on, did you
really think I wouldn't join in?

Depending on right hand placement (assuming a right side throw), you could be describing either
koshi guruma (hip wheel), wherein the right arm goes around the opponent's neck and secures him to the body in a side headlock, or (which I believe to be more likely)
tsuri komi goshi (lift-pull hip throw), wherein the thrower is very low, hips against the opponent's thighs, and the right arm is almost straight up behind him, right hand grasping the collar of the opponent roughly at his left carotid level.
Genjumin could probably describe them better, or know which one you mean. John!
student,
whose applications of Judo has been roughly equivalent to Wile E. Coyote's applications of Acme, Inc. products: They Work In Theory - Or For Others.

[This message has been edited by student (edited May 12, 2000).]