It looks like the best name for them is "Molex female crimp termination connector", which I was finally able to track down on a couple of parts sites. I'll be ordering a handful to go along with my next parts order so I can make pigtail leads for the EZ-Hooks.
Meanwhile, the Sparkfun logic probe leads arrived today, and work beautifully on the DIP ICs I'm debugging now. Yeah, they're a little cheap but the split grabbers make a solid connection to the pins and the leads are long enough to get clear of the chassis when I attach a scope probe to them. They also let me tap onto several ICs at once, and take up quite a bit less space than the big spring clip IC testers.