Sociedade de Geographia de Lisboa (Lisbon). Corresponding Member, 1877.
RUSSIA.
Society of Naturalists of the Imperial Kazan University. Hon. Member, 1875. Societas Caesarea Naturae Curiosorum (Moscow). Hon. Member, 1870. Imperial Academy of Sciences (St. Petersburg). Corresponding Member, 1867.
SPAIN.
Institucion Libre de Ensenanza (Madrid). Hon. Professor, 1877.
SWEDEN.
Royal Swedish Academy of Sciences (Stockholm). Foreign Member, 1865. Royal Society of Sciences (Upsala). Fellow, 1860.
SWITZERLAND.
Societe des Sciences Naturelles de Neuchatel. Corresponding Member, 1863.