This label was cytoarchitecturally-defined for perirhinal cortex (Brodmann's area 35).
you have three options for using these labels:
labels in freesurfer surface space are in subjects dir subj/label/?h.perirhinal.label
instructions on how to view in freeview
where to get stats on this label (../stats/$hemi.BA.stats)
already in freesurfer 5.3
label in volume space
mapping surface label to subjects volume space
will be available in v6
or if you have freesurfer, run this to map from surface space to volume space and then this is how you view it.
label in fsaverage volume space
label in mni152 volume space