here is a more proper snipe hing, how to make it:
Forging them like this will make them stronger and therefore easier to drive through the holes.
Here is another blogger posting on how to install them:
His orientation of the heads is important. i'm not so sure about driving the lid onto the hinge, but if this guy does it that way there must be merit. I'll try it with the next ones I do.
Much of the interwebs thinks these are a colonial american hinge, and while they certainly were used a lot then (or at least, many have survived) there are also extant examples from english and continental chests. Here is an English or continental example from 1550's
Here is a 17th c oak frame and panel blanket chest with snipe hinges:
This is an English 6-board chest from 15th-16th c.: