3. _Laketon, Wabash County._—In the Fourteenth Annual Report of the Geological Survey of Indiana, page 20, Cope and Wortman stated there was in the Survey’s collection the symphyseal portion of the lower jaw and a large part of the left ramus with all the premolar teeth, except the last. This had been found at Laketon, in Wabash County. There were given no further details, and the writer failed to find the specimen in the collection. In the collection of Earlham College, Richmond, are photographs of probably this specimen and of a part of the upper jaw. The latter bone shows 3 premolars and the first molar; the lower jaw presents the symphysis, the right canine, and the 2 anterior premolars. The photographs are labeled as those of _Platygonus compressus_, determined by Cope, and as made from the Wabash County specimen. All the region about Laketon is covered with Wisconsin drift or materials derived from it. The peccary found must have lived after the retirement of the border of the glacier beyond the Wabash River. It was probably long after this and when the climate was perhaps warmer than it is now. ILLINOIS. (Maps 20, 38.) 1. _Galena, Jo Daviess County._—In 1848, Dr. John L. Le Conte (Amer. Jour. Sci., vol. V, pp. 102–106) described what he regarded as 5 new species of fossil mammals from the lead region of Illinois. These had been secured by Mr. Wm. Snyder, of Galena, in a lead crevice 50 feet below the surface, filled with a mixture of clay and sand cemented by oxide of iron into a hard mass from which the specimens could not be removed without great injury. The species described were called _Platygonus compressus_, _Hyops depressifrons_, _Protochœrus prismaticus_, _Procyon priscus_, and _Anomodon snyderi_. The last was regarded as related to the moles. _Procyon priscus_ resembled closely the existing _P. lotor_. The 3 species first mentioned are now regarded as belonging to a single species, which takes the name _Platygonus compressus_. It may be remarked that the original spelling of the generic name was due perhaps to a lapsus calami or to a printer’s error. In the complete paper published shortly afterward the name was spelled _Platygonus_. It is to be added that the teeth which served as the type of the so-called species _Protochœrus prismaticus_ were found at a locality 15 miles from the place where the other remains were obtained; but as to where this place was nothing is said. In 1848 (Mem. Amer. Acad. Arts, Sci., vol. III, pp. 257–274, plates I to IV) _Platygonus compressus_ was more completely described. Various teeth and parts of the skull and some limb-bones were figured. In this article it is stated that the remains described had been found in a lead crevice a few miles from Galena. A portion of the bones had been preserved by the miners and had at length found their way into the hands of Mr. Snyder, a merchant in Galena.