Lyell stated that among other animals which had been found at Skidaway Island was _Mylodon_. _Mylodon_ was reported by Lyell (“Travels in North America,” vol. I, p. 164) as having been found at Heyner’s Bridge. This is or was situated about 7 miles south of Savannah and about 5 miles northwest from the locality on Skidaway Island where the _Megatherium_ and _Mylodon_ remains were found. The map accompanying Hodgson’s memoir is here reproduced as map 40.
1. _Archer, Alachua County._—Leidy mentioned (Proc. Acad. Nat. Sci. Phila., 1886, pp. 11, 12) the fact that an astragalus of _Megatherium_ had been found at Archer. Several other species of vertebrates have been found there, among them _Teleoceras fossiger_, _Gomphotherium floridanum_, _Hipparion plicatile_, three species of _Procamelus_, and a species of _Tapirus_. The deposits are assigned to the Pliocene, but it is doubtful whether the megatherium and the tapir belonged among the others. The geology of the locality is discussed on page 375. The megatherium, as an undetermined species, is included in the list of fossils which is recorded by Leidy in Bulletin 84 of the United States Geological Survey, page 129. It may be referred provisionally to Leidy’s _Megatherium mirabile_.
2. _Almero Farm, St. John County._—In the collection of Mr. Fred Allen, at St. Augustine, the writer has seen a right tibia of a mylodon found in the Inland Waterway Canal about 28 miles south of St. Augustine. The bone is complete, except that a sliver has been split off the upper half of the outer border. The total length of the bone is 290 mm.; the greatest width of the upper end 208 mm.; width at middle of length 105 mm.; width of surface for astragalus 130 mm. This appears to be a relatively stouter bone than the larger one described by Harlan (Amer. Jour. Sci., vol. XLIV, 1842, p. 77). It is also larger and relatively stouter than a tibia found at Labelle, Lee County, described on page 40. It is referred to _Mylodon harlani_.
11. _Williston, Levy County._—In the U. S. National Museum there are some foot-bones of a large ground-sloth, which are labeled as having been collected in 1887 by the U. S. Geological Survey, in the county named. The collector was probably J. B. Hatcher. The astragalus had evidently been studied by Leidy. This bone was described by the writer in 1919 (Proc. U. S. Nat. Mus., vol. LVI, p. 104, plate XXVII) as _Thinobadistes segnis_. Later, other parts of the foot were found in the museum and described (Proc. U. S. Nat. Mus., vol. LIX, p. 638, plate CXIX, figs. 6–11).