13. _Fellsmere, St. Lucie County._—Dr. E. H. Sellards (8th Ann. Rep. Florida Geol. Surv., p. 105) stated that _Mammut americanum_, represented by a tooth or teeth, had been found at Fellsmere in connection with the construction of drainage canals. 7. _Vero, St. Lucie County._—At this place have been found well-preserved remains of _Mammut americanum_. Besides a part of a lower jaw, there are some parts of tusks and fragments of other parts. The right side of a palate containing the second and the third true molars, found in what has been called stratum No. 2, has been figured by Sellards (8th Ann. Rep. Florida Geol. Surv., plate XXXI). The age of these will be discussed on pages 381–384. 14. _Palm Beach, Palm Beach County._—In his report of 1916, already cited, Dr. Sellards noted the fact, on page 105, that several teeth of _Mammut americanum_ had been obtained by him, 8 miles west of the Florida East Coast Railroad, in the canal constructed to drain the Everglades. From the same canal had been secured _Elephas columbi_, _Equus complicatus_, and a femur of a species of _Bison_. Sellards informs us that the vertebrate fossils here, as at Vero and many other localities, are embedded in the sand and muck beds which lie above the Pleistocene marls. 8. _Hillsboro County._—Remains of mastodon have been reported from various places in this county, but the localities have not been very exactly defined. In the National Museum (No. 6726) is a lower left hindermost molar of _Mammut americanum_ which was sent by Mr. W. L. Spitler, of Tampa. Exactly where it was found is not recorded. The tooth is white and well preserved. There are five cross-crests. The cones are unusually low, and such teeth may possibly represent an undescribed species. At Heidelberg University, Tiffin, Ohio, the writer has seen a mastodon tooth, labeled as having come from Tampa Bay. The tooth is heavy and rock-like. A part of an atlas of the mastodon is from the same place. In the collection of Oberlin College, Oberlin, Ohio, is a lower right last molar of a mastodon, labeled as having been found at Sulphur Springs, Hillsboro County. The writer has not found where this place is situated. All of the specimens mentioned belong to _Mammut americanum_. 9. _Alafia River, Hillsboro County._—Dr. E. H. Sellards (7th Ann. Rep. Florida Geol. Surv., p. 112, fig. 45) records the finding of an upper right last molar of _Mammut americanum_ in this river. The tooth is unworn and has four cross-crests and a large talon. It was preserved in the collection of S. A. Robinson. With a collection of teeth of _Equus_ found in Alafia River and preserved in the American Museum of Natural History, New York, is a single cross-crest of _Mammut americanum_.