The rare gomphine Ophiogomphus anomalus was recently rediscovered in central Maine by a collecting expedition consisting of Ailsa and Thomas Donnelly, Sidney Dunkle, and Jerrell J. Daigle. Adults had not been seen in Maine since the original type series from Orono in 1898-99. O. anomalus was collected on four rivers in two counties at five new localities, but all localities are on the Penobscot River system. Material examined: Piscataquis County, Piscataquis River, Medford, 1 $ from the University of Maine at Orono via K. Elizabeth Gibbs, 14 June 1979, (JJD); — Piscataquis River 2.0 miles E of Medford, Hwy 6-16, 20 June 1987, 5 <5 (AD, TD), 1 $ 2 $ (SWD), 1 <5, 2 $ (JJD); — Pleasant River, Brownville, Hwy II, 21 June 1987, 6(5 (SWD), 6 5 I $ (JJD); — Piscataquis River, 4.0 miles NW Howland, Hwy 6-16, 22 June 1987, 2$ (SWD), 15 (JJD); —Penobscot County: Penobscot River, Sebonibus Rapids (Snow Island), North Lincoln, Hwy 2, 25 June 1987, 2 5,12 (SWD); — Mattawamkeag River, Mattawamkeag, Hwy 2, 25 June 1987, I $ (SWD), 6 <3, 1 pair in copula (JJD).