_Citellus tridecemlineatus tridecemlineatus._ Thirteen-striped ground squirrel August 14: adult, 0. _Sciurus hudsonicus loquax._ Southern red squirrel July 24: adult, 0. July 27: juvenile, 0. _Sciurus niger rufiventer._ Fox squirrel August 11: subadult, 0. _Sylvilagus floridanus mearnsii._ Mearns cottontail July 21: adult, 4, 70 mm. NEW STATE RECORD OF THE PRAIRIE VOLE The specimens of prairie vole, _Microtus ochrogaster_, listed above from the sedges and rushes of cleared upland in the Warren Woods preserve and from a nearby wheat field constitute the first authentic record of the species from Michigan. The prairie vole had previously been erroneously reported to be abundant in Washtenaw County by Covert[2], who evidently mistook the Pennsylvania vole for this species. OTHER MAMMALS OF THIS REGION The following notes on mammals formerly or at present living in the region but not found by me in Warren Woods are based mostly on information furnished by George R. Fox, Director of the Edward K. Warren Foundation, and by William Schmidt, a trapper and hunter. _Didelphis virginiana virginiana._ Virginia opossum. Three were seen and one captured in Three Oaks in the winter of 1919-20, and another was found in a granary on the outskirts of the town. The previous winter one was shot just southwest of town, and another was seen in a ravine north of Harbert. One was killed in Warren Woods some time ago. _Condylura cristata._ Star-nosed mole. Mr. Hans captured one four miles south of Three Oaks, near the Indiana line in 1919, and brought the skin to Mr. Fox. One was taken by Dr. Parker at Lakeside in June, 1919. _Ursus americanus americanus._ Eastern black bear. Formerly occurred in the region. _Canis lycaon._ Timber wolf. About eleven years ago three were killed from a pack of nine wolves at Lakeside. About 1910 a pack of eight were seen at various times during the winter on the marsh between Three Oaks and Galien. The following winter the same pack, or another of the same number, was seen southwest of Three Oaks, and four of the pack were killed just over the Indiana line. _Vulpes fulva._ Eastern red fox. Common in the region. One was killed in December, 1919, after having been chased from the Warren Woods by dogs. Another was seen in January, 1920, half a mile north of Three Oaks. In preceding winters a number have been killed south of Sawyer where they evidently come from the sand dunes. _Lutra canadensis canadensis._ Canada otter. Formerly occurred along the streams, but are now apparently all gone. _Felis couguar._ Cougar. One was killed a few miles northeast of Three Oaks many years ago. Another was killed near New Buffalo in the early days. _Lynx ruffus ruffus._ Bobcat. One was killed a few years ago near the Galien River a few miles northeast of Three Oaks. _Erethizon dorsatum dorsatum._ Canada porcupine. Found here in the early days.