Hormoceras parvulum Zanardini ex Frauenfeld, 1855: 42 (type locality: Sibenik, Croatia).
Ceramium parvulum (Zanardini ex Frauenfeld) Grunow, 1867: 63 (including Indian Ocean record).—Reichardt, 1871: 23.— Hemsley, 1884: 281.
INDIAN OCEAN DISTRIBUTION: St. Paul Island.