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The "subcallosal area" and "parolfactory area" are considered equivalent in BrainInfo, but in Terminologia Anatomica they are considered distinct structures.
Additional images
3D view of the subcallosal area in an average human brain
Shoja MM, Tubbs RS, Loukas M, Shokouhi G, Jerry Oakes W (2008). "Emil Zuckerkandl (1849-1910): anatomist and pathologist". Ann. Anat. 190 (1): 33–6. doi:10.1016/j.aanat.2007.09.001. PMID18342140.