AKA terminals, contacts, crimp pins, crimp on pins, crimp terminals, crimp on contacts, or any other permutation. They're for 0.156" pitch (spacing) edge connectors. They're split, or "bifurcated" in the technical lingo. Molex SD-4366.
In addition to Bob Roberts, Great Plains Electronics and Jameco also sell them.
Do you know you need a special crimping tool to install them properly?
Bob also sells a tool that works very very well, make sure you don't get the old style where the pins have flags from the metal that holds them together in a strip (new ones have a strip across the bottom so they break off clean and no flags). Only downside to bobs tool is the rubber/plastic handles slide off after some use (i'm gonna glue mine on). there's also some nice directions on Bob's page on how to crimp them.
Could also be called Edge pins or Edge Connector pins.