Procellaria is a genus of southern ocean long-winged seabirds related to prions, and within the order Procellariiformes. The Black Petrel (Procellaria parkinsoni) ranges in the Pacific Ocean, and as far north as Central America. The Spectacled Petrel (Procellaria consicillata) is confined to the Atlantic Ocean, and the Westland Petrel (Procellaria westlandica) to the Pacific Ocean. The White-chinned (Procellaria aequincotialis) and Grey Petrel (Procellaria cinerea) range throughout the higher latitudes of the Southern Ocean.