ephippium
E*phip"pi*um, n. Etym: [L., saddle cloth, fr. Gr. 1. (Anat.) Defn: A depression in the sphenoid bone; the pituitary fossa. 2. (Zoöl.) Defn: A saddle-shaped cavity to contain the winter eggs, situated on the back of Cladocera.
E*phip"pi*um, n. Etym: [L., saddle cloth, fr. Gr. 1. (Anat.) Defn: A depression in the sphenoid bone; the pituitary fossa. 2. (Zoöl.) Defn: A saddle-shaped cavity to contain the winter eggs, situated on the back of Cladocera.