Martin described the visceral and osteological anatomy of one which had been received alive the preceding year.
These ancient opossums have been separated generically from Didelphys (in its widest sense) on account of certain differences in the relative sizes of the lower premolars, but as nearly the whole of the species have been formed .on lower jaws, of which some hundreds have been found, it is impossible to judge how far these differences are correlated with other dental or osteological characters.
C. Eyton to have some very exceptional osteological features, and these were found to be also common to Pteroptochus and Scytalopus.
To judge by the osteological remains which the researches of geologists have brought to light, there was perhaps scarcely a county in England or Wales in which, at one time or another, wolves did not abound, while in Scotland and Ireland they must have been still more numerous.
The preceding list is given to show the very marked agreement of L'Herminier's results compared with those obtained fifty years later by another investigator, who approached the subject from an entirely different, though still osteological, basis.
In tracing the osteological characters of apes and man through this series, the general system of the skeletons, and the close correspondence in number and arrangement of vertebrae and ribs, as well as in the teeth, go far towards justifying the opinion of hereditary connexion.