3. _Chalfants, Perry County._—In the collection of the Archæological and Historical Museum at the University of Ohio are considerable parts of a specimen of _Platygonus compressus_ found not far from Jonathan Creek, about a mile northeast of Chalfants. The locality, as given the writer by Professor W. C. Mills, is as follows: center of southwest quarter of section 14, township 17 north, range 16 west. The name of the political township is Hopewell. The locality appears to be on the area covered by Illinoian drift. This fact makes it possible that the animals lived during the Sangamon stage. 4. _Lisbon, Columbiana County._—In the collection just mentioned is the left ramus of a lower jaw of a peccary which the writer referred with doubt to _Mylohyus nasutus_ Leidy. It lacks so much of the front end that only 18 mm. of the symphysis is present; also, the ascending ramus is broken off. There are present the 3 milk molars and the first molar, but this is yet in its cavity in the bone. A comparison with Leidy’s _M. pennsylvanicus_ seems to show that the jaw did not belong to that species. Of _M. nasutus_ no lower jaw is known. _Table of measurements, in millimeters_. ┌─────────────┬───────────────────────────┬───────────────────────────┐ │ Specimen. │ Lisbon jaw. │ M. penn. │ ├─────────────┼─────────────┬─────────────┼─────────────┬─────────────┤ │ │ Length. │ Width. │ Length. │ Width. │ ├─────────────┼─────────────┼─────────────┼─────────────┼─────────────┤ │ Dm_{2} │ 9│ 5│ 7│ 4.5│ │ Dm_{3} │ 12│ 8│ 11│ 7│ │ Dm_{4} │ 19.5│ 11│ 18│ 10.5│ │ M_{1} │ 16.5│ 12│ 16│ 13│ └─────────────┴─────────────┴─────────────┴─────────────┴─────────────┘ This specimen was found near the southern edge of Lisbon, on Middle Fork of Little Beaver Creek, in the northwest quarter of the northeast quarter of section 24, township 18 north, range 3 west. The locality is apparently outside of the glaciated area; and it is at present impossible to determine the geological age of the animal beyond that it undoubtedly belongs to the Pleistocene. The writer believes that _Mylohyus nasutus_ did not survive the Wisconsin ice-stage. The specimen was described and figured by the writer in 1914 (Iowa Geol. Surv., vol. XXIII, p. 226, plate XXV, figs. 4–6). MICHIGAN. (Map 36.)