philoscia

Updated: January 12, 2026

The curvature of the embryo upwards instead of downwards was met with by me as well as by Rathke in Idothea, and likewise in Cassidina, Philoscia, Tanais, and the Bopyridae, indeed, I failed to find it in none of the Isopoda examined for this purpose.

Fritz Muller - Facts and Arguments for Darwin