The fragile tree snail (Samoana fragilis; akaleha dogas, denden), in the Partulidae family, is known from the forest ecosystems of Guam and Rota. The conical shell of the fragile tree snail is 0.5 to 0.6 in (12 to 16 mm) long, 0.4 to 0.5 in (10 to 12 mm) wide, and is formed by four whorls that spiral to the right. The common name is derived from the thin, semi-transparent nature of the shell. The shell has delicate spiral striations intersected by transverse growth striations. The background color is buff, tinted by narrow darker marks and whitish banding that are derived from the internal organs of the animal that are visible through the shell. The biology and habitat for this partulid tree snail are the same as those described for the other partulid species.