In 1897 (Ann. Rep. Geol. Surv. New Jersey for 1896, p. 208, plate X), Lewis Woolman described other remains of horses supposed to belong to _Equus complicatus_, secured in the same Fish House clays. The writer has seen these and regards them as belonging to the species just named. These remains of horses will be mentioned on pages 302–303. 3. _Navesink Hills, Monmouth County._—Somewhere in the northeastern part of Monmouth County, in the region of the Navesink (or Neversink) Hills, have been found remains of a fossil horse. They were first mentioned by S. L. Mitchill (Cat. Organ. Remains, 1826, pp. 7, 8). He mentioned a cervical vertebra and teeth in sound condition. Leidy (Jour. Acad. Nat. Sci., Phila., vol. VII, p. 261) wrote that a vertebra and teeth were associated with remains of a mastodon. Mitchill mentions only a part of a tibia of a mastodon. These objects were all presented by Mitchill to the Lyceum of Natural History in New York. The writer believes these teeth had been buried in an early Pleistocene deposit. PENNSYLVANIA. (Map 17.) 1. _Pittston, Luzerne County._—In the collection of the Academy of Natural Sciences at Philadelphia are 2 horse-teeth found at or near Pittston. They were described and figured by Leidy in 1873 (Monograph U. S. Geol. Surv., I, pp. 245–246, plate XXXIII, figs. 16, 17) as _E. major_ (=_E. complicatus_). He stated they were found on the banks of the Susquehanna River, associated with remains of mastodons and _Bison latifrons_. The last was, however, a species of _Symbos_. In 1869 (Jour. Acad. Nat. Sci., Phila., vol. VII, p. 262), Leidy stated that it was reported these remains had come from a stratum “full of bones.” This stratum belonged probably to an early or middle Pleistocene interglacial stage. 2. _Stroudsburg, Monroe County._—In 1889 (Ann. Rep. Geol. Surv. Pennsylvania for 1887, p. 6), Leidy reported the finding of “a pair of teeth of a horse, which were yet incompletely developed,” in Hartman’s Cave, near the town mentioned. He thought they belonged to an indigenous species. The position of the cave, its fossils, and their age will be considered in discussing the Pleistocene geology of the State on pages 308 to 311.