pes hippocampi pes hippocampi the lower end of the hippocampus is enlarged, and presents two or three rounded elevations or digitations which give it a paw-like appearance, and hence it is named the pes hippocampi (pes meaning foot) or pes hippocampi major pes hippocampiinferior and posterior cornua, viewed from above. (pes. hipp. labeled at center top.)identifiersta98a14.1.09.323ta25656fma84032anatomical terms of neuroanatomy