2. _Head of Cooper River, Berkeley County._—Richard Harlan (Jour. Acad. Nat. Sci. Phila., vol. III, 1823, p. 66, plate V, fig. 2; Med. Phys. Res., p. 359, plate, fig. 2) described briefly and figured an elephant tooth found in constructing the Santee Canal, probably in Biggin Swamp, where the remains of _Mammut americanum_ and _Elephas columbi_ were discovered. The tooth was a large one, the greatest diagonal length being 14.5 inches (368 mm.). It had been worn back quite to the rear, the trituration having affected 15 ridge-plates. This worn face measured 9 inches (228 mm.). Harlan stated that on this grinding-face 5 inches was occupied by 6 enamel plates and 7 plates of cement. An estimate shows that a 100–mm. line would cross 5 of the ridge-plates. Had this tooth possessed the number (24) of ridge-plates usually found in _E. columbi_, its length would have been 20 inches or more. FLORIDA. (Maps 14, 15.) 1. _Dunnellon, Marion County._—In the collection of the Florida Geological Survey (Nos. 2233, 2234) are two fragments of teeth of an elephant dredged from Withlacoochee River at Dunnellon, presented by Mr. F. J. Titcomb. The teeth are regarded by the writer as being lower last molars, although the plates run nearly directly across the grinding-surfaces. They may belong to one individual. No. 2233 presents six plates; five of these occupy a line 100 mm. in length. They are much bent as they ascend, so that their hinder faces are very concave. The enamel is moderately thick. The tooth (No. 2234) has been figured by Dr. Sellards of the natural size (8th Ann. Rep. Florida Geol. Surv., p. 85, fig. 12). As shown by that figure, the ridge-plates of the rear portion have a thickness of 25 mm. or even more. Taken all together there are hardly 5 in 100 mm. If that tooth had belonged to _Elephas columbi_ and had had 24 plates, the length would have been about 25 inches, which is hardly to be supposed.