MARYLAND.
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1. Benedict, Charles County.—More than 50 years ago Cope (Proc. Nat. Sci. Phila., 1867, p. 155) reported the finding of peccary jaws mingled with remains of Miocene vertebrates collected by James T. Thomas, near his residence in Charles County, not far from Patuxent River, near Benedict. Cope recognized that the peccary and a part of a jaw of Grison macrodon (referred by Cope to Galera) belonged to the Pleistocene. The peccary was referred to the existing species Dicotyles (Tagassu) torquatus; likewise their similarity to the remains described by Leidy from Charleston, South Carolina, was noted. They are assigned here to Tagassu lenis. The jaws from the Patuxent locality are now in the Academy of Natural Sciences at Philadelphia.
2. Chesapeake Beach, Calvert County.—Mr. William Palmer, of the U. S. National Museum, has shown the writer 3 teeth of a peccary secured at the place named. These will be mentioned in the discussion of the geology of the locality. A left third premolar is 10.3 mm. long and 6.2 mm. wide. A left second molar is 12 mm. long and 10 mm. wide. These apparently belonged to Tagassu lenis.
In March 1921, Dr. Adolph H. Schultz, of the Johns Hopkins Medical School, presented to the U. S. National Museum a part of the left ramus of the lower jaw of a peccary found at Chesapeake Beach. This fragment contains the first and second molars and the sockets of the fourth premolar and the third molar. This jaw and the teeth have been compared with the corresponding parts of a specimen of Tagassu angulatus (No. 35815, U. S. Nat. Mus.), secured along the boundary between the United States and Mexico. In size the fossil teeth differ little from those of T. angulatus; the first molar is, however, somewhat wider; the conule between the two hindermost cones, the hypoconulid, is much smaller than in the existing peccary used for comparison. The inner face of each tooth is not so flat in the fossil as in the other species. In the fossil the height of the jaw at the second molar is 28 mm.; in T. angulatus 35 mm. The specimen is referred to Tagassu lenis.
3. Corriganville, Allegany County.—In a rock crevice 3 miles west of north of Cumberland, J. W. Gidley found abundant remains of peccaries. These were described by him in 1920 (Proc. U. S. Nat. Mus., vol. LVII, pp. 651–678, plates LIV, LV, 13 text-figs.). He recognized 4 species, 2 belonging to Platygonus and 2 to Mylohyus. The new species, Platygonus cumberlandensis and P. intermedius and Mylohyus exortivus, are based on materials found in the fissure. With the other materials he recognized a part of a lower jaw, which he referred to M. pennsylvanicus.
4. Cavetown, Washington County.—In 1920 (Proc. U. S. Nat. Mus., vol. LVII, pp. 96–109), the writer described a collection of fossil vertebrates made at Cavetown by the officers of Phillips Academy, Andover, Massachusetts. Among the species are 6 which belong to the group of peccaries, as follows: Mylohyus nasutus (Leidy), M. exortivus Gidley, M. obtusidens Hay, Tagassu? tetragonus? (Cope), Platygonus vetus Leidy, P. cumberlandensis Gidley.
These and the associated species apparently lived here during approximately the Middle Pleistocene, probably the Sangamon stage. A list of the species found in the fissure and their geological relations are presented on page [348]. The specimen above referred provisionally to Tagassu tetragonus was called, in the paper cited above, Platygonus tetragonus. It appears, however, to be nearer Tagassu. It may even belong to an unnamed genus.
VIRGINIA.
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