Assiminea beddomeana Nevill, 1880
Brandt (1974) descriptions on Assiminea (Austropilula) beddomeana – “Shell depressed, dome-shaped, chestnut to olive-brown, with a whitish umbilical zone, glossy, smooth except for the delicate growth lines. The spire is not elevated but forms a semiglobose small cupola with regular outlines. The 5 whorls are flat and increase regularly in diameter. The suture is very shallow but well marked. The base of the shell is moderately flattened, the umbilicus is narrowly open. Aperture semilunar, comparatively large; peristome sharp, connected by a thin parietal callus. Columella thick, broad, glossy, with a distinct incision at the umbilical side which leaves the umbilicus open which would be otherwise be covered by the broad columella. Underneath the umbilicus the columella shows a short, tongue-like process. Operculum semilunar, thin, brittle, paucispiral with eccentric nucleus.”
“Animal greyish with large black pigment dots on head, rostrum and peduncles. The eyes are placed in the swollen bases of the peduncles. Rhachis with a long, triangular basal process. Cutting edge with 5 cusps. There are 2 pointed basal cusps on either side not counted the similarity shaped outer wings. The laterals have the cusp formula 4-1-3, the inner marginals have 8 cusps, the outer 15.” (Brandt, 1974)
Assiminea (Austropilula) beddomeana – “Size: A 1.8-2.9 mm; D 2.1-3.5 mm.” (Brandt, 1974)
Other locality – “Thailand: Mangrove forest about 2 km S of Palian, in the province of Trang.” (Brandt, 1974)
Habitat – “The species was found in the mud on the ground of the mangrove swamp and also sitting on decaying wood.” (Brandt, 1974)