In 1847 Dr. Savage, a Protestant missionary on the Gaboon, reported to the distinguished anatomist Owen that there was an ape in that country larger than the chimpanzee. In addition to this information, he sent some drawings of skulls by the wife of an English missionary, Prince, in which the supra-orbital arch is strongly developed. Savage gave to the animal the name of _Troglodytes Gorilla_, to distinguish it from _Troglodytes niger_, the chimpanzee. Owen also described two skulls of gorillas, sent to him from the Gaboon (16). The skull of a gorilla, sent to Boston by the missionary Wilson, was drawn and described by Professor Jeffreys Wyman, and with it the notes of the donor were also published (17). In 1851 the skeleton of a gorilla reached Philadelphia through the medical missionary H. A. Ford, who also published the latest accounts of the new anthropoid (18). In 1849 some remains of a gorilla reached Paris through Gautier Laboulaye, and this valuable contribution to natural history was received by de Blainville and Isidore Geoffroy Saint-Hilaire. In 1851 and 1852 more perfect remains were presented to the Museum in Paris by Dr. Franquet and Admiral Penaud. In the finely illustrated works by de Blainville (19), Is. Geoffroy Saint-Hilaire (20), and Duvernoy (21), they are represented with great care. A splendid illustration of one of these specimens, excellently stuffed, consisting of an adult male, adorns the _Photographie zoologique_, by L. Rousseau and A. Devéria, which has, so far as I am aware, been published without any text (22). This illustration is so true to nature that I made use of it in one of my earlier publications (23). Paul Belloni du Chaillu, born in North America of French parents, and reared in his father’s mercantile house on the Gaboon, spent the years 1855–65 in roaming through the lands bordering on the Gaboon, the Ogōwē, and the Fernāo Vaz; he professed to have taken part in gorilla-hunts, and he published several books about his travels (24). Critical light has been thrown upon these works, especially by A. E. Brehm and Winwood (25); the illustrations are defective, and the text is full of tales of adventure. Du Chaillu’s information respecting the African anthropoids was published in the _Proceedings of the Zoological Society of London_ (26). His remarkable collection of the remains of apes has been described by Jeffreys Wyman (27), to whom we are also indebted for a notice of the materials collected by Savage (17).