From Dr. I. Edward Line, Rochester, N. Y., the writer has received a photograph of an upper right penultimate molar, little worn, which he reports as having been found in 1887, near Genesee River, on the road from Avon to Fowlerville. It was discovered in a marshy part of the farm of Robert Boyd and was exhumed by the late Dr. William Nishet, of Avon. Other teeth, a tusk, and fragments of bone were found, some of which, Dr. Line states, were taken to Harvard University by Professor F. W. Putnam. Quite certainly this was the same mastodon as that reported by Mr. Peck. The animal could not have lived here until after a stage represented by Fairchild’s plate 37 (Bull. 127, New York State Mus.). 46. _Geneseo, Livingston County._—In 1827 (Amer. Jour. Sci., vol. XII, p. 380), Jeremiah Van Rensselaer reported that, in 1826, the skull, tusks, lower jaws with teeth, pelvis, and many other bones had been found at Geneseo. Later (1841) Lyell and James Hall made excavations at the same place, but discovered only some fragments of the skull and of other bones. These were at a depth of about 5 feet and were mixed with marl and yet existing fresh-water shells. Over all was a layer of muck (Lyell, “Travels in North America,” vol. I, p. 55). Hall (Geol. 4th Dist., p. 363, fig. 173) published a figure of one of the teeth, a hindermost molar. The remark as to the geological age of the Fowlerville specimen applies to this one. 47. _Nunda, Livingston County._—Clarke (Bull. 69, p. 932) stated, on the authority of Charles E. Beecher, that 10 bones and fragments of a mastodon had been secured here, and presented to Yale University collection. No exact locality and no geological information were furnished. The geological age is quite certainly late Wisconsin or still later. 48. _Belvidere, Allegany County._—In the American Geologist, vol. XXXIII, 1904, page 60, an anonymous note states that some mastodon remains, 3 ribs and 4 vertebræ, had been unearthed at this place by James Johnson, of Bradford, and Alban Stewart, of the Smithsonian Institution. Nothing was said as to the exact locality and geological conditions. The time of the animal’s life could hardly have been earlier than the last half of the Wisconsin stage. 49. _Pike, Wyoming County._—In 1876 (Guide to Genesee Valley Mus., Letchworth Park, Castile, N. Y., 1907, pp. 5–6), a part of a skull, the tusks, a few vertebræ, and some foot-bones were found on the farm of Charles Dennis, on the outskirts of the village of Pike. They were met with in making a ditch and hence were probably in a marsh. Their geological age is that of the last half of the Wisconsin stage or later.