2. _Skidaway Island, near Savannah, Chatham County._—Remains of _Mammut americanum_ have been found at two places in Chatham County, Heyner’s Bridge and Skidaway Island. Lyell (Travels in N. A., 1845, vol. I, p. 163) records his visit to Heyner’s Bridge, on White Bluff Creek, about 7 miles south of Savannah. In Hodgson’s memoir this locality is said to be on Vernon Creek (map 40). Lyell had learned from Dr. Habersham that bones of mastodons and other extinct mammals had already been found there. Lyell himself secured a grinder of a mastodon. It was found in a bed of clay about 6 feet thick exposed only at low water. The tooth referred to may be the one mentioned by Lydekker (Cat. Foss. Mamm. Brit. Mus., pt. IV, p. 23). Hodgson (“Memoir on Megatherium,” p. 12) reported the discovery of mastodon remains at this place, specifying a section of a tusk 3.25 feet long and nearly 11 inches in circumference; also a femur, which was sent to Paris. Reference is made to the mastodon remains on page 42 of the memoir mentioned. For the geology of this locality and a list of the species found there the reader is referred to page 371.
It has not been practicable to arrange the figures on the map of mastodons in Florida in an orderly manner. Below, the localities are described by beginning at the northern end of the State and ending at the southern end.
1. _Marianna, Jackson County._—In the U. S. National Museum (No. 324) is a tooth of _Mammut americanum_, recorded as having been sent to the National Institute, September 25, 1847, by Walter Yonge, from Marianna. No additional information has been preserved. It is a large upper right last molar, with 5 cross-crests, a hinder talon, and nearly complete roots. Marianna is situated on Chipola River.
12. _Little River, Gadsden County._—Dr. E. H. Sellards (8th Ann. Rep. Florida Geol. Surv., 1916, p. 104) reported that a tooth of _Mammut americanum_ had been obtained from Little River.
2. _Fort White, Columbia County._—Dr. E. H. Sellards reported to the writer the discovery of a tooth of _Mammut americanum_ at a point 3 miles northwest of Fort White. No details have been received. The town is on Santa Fe River.
3. _Citra, Marion County._—In Ward’s Natural History Establishment, at Rochester, New York, the writer saw in January 1914, 2 cross-crests of a probably hindermost upper molar of _Mammut americanum_. There had been present a large pulp-cavity. Nothing definite about the history of the specimen could be obtained, except that it had been found at Citra.