De humano foetu liber tertio editus, ac recognitus. Eiusdem anatomicarum observationum liber: ac De tumoribus secundum locos affectos liber nunc primum editi.

First edition of Aranzi's Anatomicarum observationum published with the third edition of De humano foetu. In the Anatomicarum observationum Aranzi pointed out that the eye muscles arise from the margin of the optic cavity, not from the dura mater as was thought previously; and he described the extensor indicis proprius, obturator externus, genioglossus, coracobrachialis, and tensor fascia latae. Most importantly, he provided the first description of the hippocampus in the inferior horn of the lateral ventricle, which he referred to as the hippocampal ventricle, and the inferior extension of the lateral ventricular choroid plexus. He called the elevation in the floor of the inferior horn the “sea horse/hippocampus” or “white silkworm/bombycinus” and observed that it extends rostrally as the fornix. Overall, his description of the ventricular system was a clear improvement on that of Vesalius, who had also described the inferior horn. (Clarke and O’Malley 719-21; Larry W. Swanson). Digital facsimile from Google Books at this link.