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Under the Endangered Species Act, we will make listing determinations for the following species: the Pacific sheath-tailed bat, two birds (the mao and the friendly ground-dove), and two species of American Samoa land snails (Eua zebrina and Ostodes strigatus). We are required to designate critical habitat, to the maximum extent prudent and determinable, concurrent with a listing determination for the species. We will develop a critical habitat designation for the five species as a separate rulemaking action (1018-AZ98). All five species occur in American Samoa. The bat and the mao also occur in Western Polynesia and Melanesia. The Pacific sheath-tailed bat is a cave-dependent species. The mao is primarily restricted to mature, well-developed, moist, mossy forests at upper elevations, but has been observed in other ecosystems, including lowland rainforest, disturbed secondary forest, and montane rainforest. The friendly ground-dove is found in scrubby bush and bamboo thickets on smaller Polynesian islands, and lowland and montane forest on the larger islands. The land snails are typically found on understory vegetation beneath intact forest canopy.