14. Kingsford, Polk County.—In the U. S. National Museum are 3 horse-teeth collected in 1903 by Mr. Juan C. Edmundoz, from some of the phosphate mines in the region about Kingsford. Although most of the fossils from these mines have been supposed to belong to the late Miocene or early Pliocene, these horse-teeth are certainly of Pleistocene age. One tooth, No. 8620, is an upper right true molar, either the first or the second. It is worn down to about half its original length. The length of the grinding-surface is 25 mm.; its width is 26 mm. The enamel surrounding the lakes is extremely complicated. Another tooth, No. 8619, is a right hindermost molar with the protocone missing. A third tooth, No. 8618, is a little-worn lower molar, probably the second. The height is 83 mm., the length 25 mm., width 14 mm. The teeth are to be referred to Equus leidyi.
15. Brewster, Polk County.—In volume VIII of the Florida Geological Survey, pages 95, 96, Dr. Sellards states that from the phosphate mines at Brewster have been obtained teeth of Hipparion minor. A list of the associated species is to be found in the discussion of the Pleistocene geology of Florida on page [380].
16. Alafia River, Hillsboro County.—In the American Museum of Natural History, New York, is a collection of 10 teeth of Equus, said to have been dredged in Alafia River. Some belong to E. leidyi. One, a right third or fourth upper premolar worn down to a height of 40 mm., has still a length of 30 mm. and a width of 27 mm.; apparently it belongs to E. complicatus. The writer has described an extinct species of box-tortoise, Terrapene putnami (Fossil Turtles, N. A., p. 360) dredged by Professor F. W. Putnam in Alafia River about a mile above its entrance into Tampa Bay. With the bone, which forms the type of the species, were dredged a peripheral bone of a Testudo, possibly T. crassiscutata, and remains of horses and tapirs. It is pretty certain that the 10 teeth above mentioned were secured by Professor Putnam.
In Heidelberg University, Tiffin, Ohio, is a part of a lower right premolar of Equus, apparently E. leidyi, said to have been found near Tampa Bay.
17. Palmetto, Manatee County.—At several places about the mouth of Manatee River have been found relics of fossil horses. Mr. Ernest Leitzel, of Palmetto, sent to the U. S. National Museum for identification some teeth found in Manatee River, others in Terra Ceia Bay. The teeth are all well fossilized; some are upper teeth, others belong below. The writer regards them as belonging to Equus leidyi.
In the same museum are 2 lower right true molars, a second and a third, sent from Manatee by Mr. N. B. Moore. The teeth are moderately worn. The length of the grinding-surface of the hindermost molar is only 23 mm., the width 12 mm. They must have belonged to a small horse and are referred to Equus littoralis.
From Mr. Charles T. Earle the U. S. National Museum received in February 1921, several teeth of Equus leidyi, 2 of E. complicatus, and 1 of E. littoralis, which had been washed up on the beach at Palma Sola, about 10 miles below Palmetto. With these teeth came parts of antlers of a deer, a part of a metacarpal and an astragalus of Bison latifrons?, a part of a beak of a platanistid porpoise, a part of a tooth of Elephas columbi, a fragment or two of a terrapin (Trachemys sp. indet.), a fragment of the carapace of a soft-shelled turtle, and teeth of sharks. The porpoise and the sharks, also a part of a metapodial of a camel, may belong to Miocene or Pliocene deposits near the locality.
18. Sarasota Bay, Sarasota County.—The region a little further south than Manatee River has furnished remains of extinct horses. Sellards (7th Ann. Rep. Florida Geol. Surv., p. 112, fig. 47) has figured a lower tooth of a large horse, found by Mr. Joseph Willcox, at White Beach, on Sarasota Bay. Inasmuch as the fore-and-aft dimension of the tooth is 30 mm., it very probably belonged to Equus complicatus. Mr. Willcox has submitted to the writer 2 large lower teeth, regarded as belonging to the species just mentioned. Another lower tooth, apparently a third or fourth lower premolar, found on the same beach, has the fore-and-aft dimension only 26 mm., the width 15 mm. This is referred to Equus leidyi. At Blackburn’s place, 12 miles south of White Beach, Mr. Willcox secured a tooth of Equus apparently little worn. The height is 83 mm., the length at the summit 28 mm., but a little further down only 26 mm.; the width 12 mm. This tooth is to be referred to Equus leidyi.
In the American Museum of Natural History, New York, are 7 teeth of Equus, collected in 1911 by Mr. Barnum Brown at a place 8 miles southeast of Sarasota. They appear to belong to the Florida horse of medium size, Equus leidyi.
19. Calvenia, Hardee County.—In the U. S. National Museum (No. 4838) is an upper right last molar of a horse labeled as found near the mouth of Charlie Apopka Creek and as having been presented by Captain Le Baron through L. C. Johnson. The tooth belongs to Equus leidyi. Another tooth found at the same place, at the same time (December 16, 1883), and presented in the same way, is a lower grinder. The height is 75 mm., the length, 27 mm., the thickness 12.3 mm. It is to be referred to E. leidyi.