I was tempted to say it might be a form of polythele, because of the cylindric and pendulent form, and the lack of radials. I think its safe to say that polythele is the only species in both the Heterochlorae (and Rhodanthae) and the Polyacanthae that has no radial spines.
But then I looked at the close-up again, and are you sure, Mark, that it has no radials. On the head to the right of the close-up, near the apex, just below (well above actually since its upside down!) a brown dried flower, I'm sure I can see a number of very short white spines on a number of tubercles. Its a little difficult to see, but I think they look more distinct that I would expect from just wool, although they are very short.
If that's the case, then I'd like to know how many, as I also don't think it is spinossima, which has lots of radials, and I've never seen one with such short radials.