I did a quick search for "olliculus" through a copy of the downloaded AFNI binaries, thinking this would find that string either in a distributed atlas' HEAD file or in one of their *niml files-- it came up with no results. (I also tried this with a more common term, "ippocampus" for the Hippocampus-- this did return several things.)

So, that is a long answer to the effect of, "I don't think it exists in any of the atlas files we distribute."

Note that you can use *any* valid atlas (and maybe even some invalid ones) with AFNI-- you can just copy it to your ~/abin/ directory (if using a standard install), or make another directory of atlases and specify it in your ~/.afnirc file.

--pt