Numerous accidental deaths of bats resulting from impalement on barbed wire (Long, 1964, Trans. Kansas Acad. Sci. 67:201), burdocks (Johnson, 1933, J. Mamm. 14:156-157), and desert plants (Barbour and Davis, 1969, Bats of America, Univ. Press Kentucky, Lexington, 286 pp.) have been reported. However, I know of only one documented instance (Dunaway, 1960, J. Mamm. 41:400) of a bat dying after becoming entangled (in Spanish moss). On 4 September 1981 I found a nearly mummified individual (MHP 19,510) of Keen's myotis (Myotis keenii) at a place I mi. N, 31/2 mi. E Burnside (T.87N, R.28W, NE/4 sec. 12), Webster Co., Iowa. The dorsal pelage of the bat was firmly attached to the seed head of a stalk of green foxtail (Seteria viridis). Close examination revealed that the attachment was made by the bristles (involucre) of the influorescence, which were entangled in the fur. The bat was not impaled. The fact that several of the adjacent stalks of foxtail were matted together suggests the bat struggled vigorously to escape. I have no explanation for how the bat became entangled.