In the paper cited Leidy described and figured (p. 24, plate III, figs. 3 to 6) plates of an armadillo-like animal to which he gave the name _Glyptodon septentrionalis_. It is now known as _Chlamytherium septentrionale_. Leidy had over 30 of these dermal scutes which had been found at Arcadia. They are now in the Wagner Free Institute at Philadelphia.
Sellards (Amer. Jour. Sci., vol. XL, 1915, p. 143) states that there are 3 dermal plates of this animal in the U. S. National Museum. In 1915 (Florida Geol. Surv., vol. VII, pp. 77, 78, plate on p. 114) he described a lower jaw, a tooth, and 2 dermal plates of the same animal.
10. _Labelle, Lee County._—In the Florida Geological Survey is a right tibia of a mylodon, found on the bank of Caloosahatchee River, near Labelle, presented by Capt. F. H. Hendry. The total length is 266 mm.; on the inner border 236 mm. The width across the articulatory surface for the femur is 164 mm. The width at the middle of the length is 84 mm.; fore-and-aft diameter at the same place 38 mm. The side-to-side diameter of the surface for the astragalus is 57 mm. The bone is referred to _Mylodon harlani_.
1. _Tuscumbia, Colbert County._—In his work on the “Extinct Sloth Tribe” in North America (Smithson. Contrib. Knowl., vol. VII, art. V, p. 6, plate XVI, fig. 13), Leidy, in recording the materials belonging to _Megalonyx jeffersonii_ at his disposal, mentioned a supposed third upper molar, said to have come “from Tuscumbia County, Alabama.” This was an error, as the name of the town is Tuscumbia. The tooth had been loaned to him by Dr. Jeffries Wyman. Nothing more is known about its history. Mercer (Proc. Amer. Philos. Soc., vol. XXXVI, p. 38) stated that a well-preserved series of bones of _Megalonyx_ had been sent to the Academy of Natural Sciences at Philadelphia by Mr. Tuomey. They had been obtained in a cave somewhere in northern Alabama. Leidy does not mention this collection in his work just cited.
1. _Natchez, Adams County._—Dr. M. W. Dickeson (Proc. Acad. Nat. Sci. Phila., 1846, p. 106) exhibited before the Academy a large series of fossil bones secured by him near Natchez. Among these were noted especially what was described as an entire head with part of the lower jaw, and many parts of the skeleton of _Megalonyx jeffersonii_. This skull is still in the collection of the Academy. The lower jaw is missing. It appears that several skeletons were represented in Dickeson’s collection. These, as Dickeson stated, had been found in a tenacious blue clay which underlies what he called diluvial drift, but now regarded as being at least principally loess. Associated with this animal were remains of _Ursus_, _Bos_ (_Bison_), _Cervus_ (_Odocoileus_), _Equus_, and some other but undetermined genera.