In 1850 (Proc. Amer. Assoc. Adv. Sci., vol. III, p. 67), Robert W. Gibbes reported the discovery of horse remains, probably a tooth, in the alluvium of Skidaway Island, a few miles southeast of Savannah. No further information was furnished. The geological conditions at this island and the fossils found there will be considered on pages 370 to 372. FLORIDA. (Maps 17, 18.) 1. _Stokes Ferry, St. Mary’s River, Nassau County._—In 1909 (2d Ann. Rep. Florida Geol. Surv., p. 147), Sellards stated, on authority of notes received from Dr. L. W. Stephenson, that 3 teeth of a fossil horse had been found at the place named. At the same place was discovered a fragment of a tooth of an elephant, most probably _Elephas columbi_, and some ear-bones of a whale. The writer has not seen these and does not know to what species they belonged. _Measurements of tibiæ of horses._ ┌───────────────────────────────────────┬─────────┬─────────┬─────────┐ │ Dimensions taken. │Equus sp.│ E. │ E. │ │ │Florida. │ scotti. │caballus.│ ├───────────────────────────────────────┼─────────┼─────────┼─────────┤ │Total length of bone │ 396│ 370│ 392│ │Length on outer border │ 360│ │ │ │Length on inner border │ 378│ │ │ │Width across upper end │ 125±│ 107│ 108│ │Fore-and-aft diameter at middle of │ │ │ │ │ length │ 45│ 40│ 37│ │Side-to-side diameter at middle of │ │ │ │ │ length │ 56│ 49│ 43│ │Greatest width at lower end │ 94│ 93│ 86│ └───────────────────────────────────────┴─────────┴─────────┴─────────┘ 2. _Almero Farm, St. John County._—In the collection of Mr. Fred R. Allen, of St. Augustine, Florida, the writer has examined a left tibia of an extinct horse, found in the Inland Waterway Canal, about 28 miles south of St. Augustine. The species has not been determined, but it may be well to put on record the measurements. It apparently belonged to a rather large horse. For comparison, other corresponding measurements are given, taken from _Equus scotti_, No. 10628 of the American Museum of Natural History, and from _Equus caballus_, No. 74 of Mr. Chubb’s collection at the museum mentioned, a trotting stallion. It will be seen that the tibia found below St. Augustine is a relatively stouter bone than those it is compared with. The large horse, known to have existed in Florida, is _Equus complicatus_. 3. _Neals, Alachua County._—This place is near Newberry. Here have been collected _Gomphotherium floridanum_, _Tapirus terrestris?_, and _Hipparion_ sp. indet.