This is another one of my three original corys. I believe that this is Corydoras sterbai. The first shot is a good one of his or her face (I suspect it's a female, but I really don't feel comfortable making a guess without a better sense of what they look like).
Here's a shot of its body. Unlike most other spotted cory's, it's got light spots on a dark body, rather than the other way around.
And here's a picture with one of my other corys - the one on the left I believe to be Corydoras trilineatus.C