Amaea hedleyi
(de Boury, 1912)
Description:
Dimensions range from 10 mm - 17 mm high and 3 mm - 5.4 mm wide.
Width to height ratio: 0.3:1 ~ 0.32:1
Shell: elongate conical; fragile; small. Exterior colour milky white. About 12.5 whorls, convex; protoconch with ~3 whorls usually eroded; teleoconch with ~9.5 whorls. Suture fairly deep, widely open. Imperforate: umbilicus closed. Approximately 21 - 30 costae on the body whorl. Costae are low, erect, thin and leafy. Costae strongly inflected near the suture. Intercostal spaces fairly thick spiral cords that do not cross the coastae. Interstices with approximately 15 spiral striae per whorl. Base ridge not prominent. Aperture quadrate-ovate; peristome double; outer lip somewhat thickened, slightly flared anteriorly; inner lip very thin and leaf-like.
Distribution:
Australian locality not confirmed, all available data lists Australia without giving specific location
Habitat:
90-100 m (Nakayama 2003: 21)
Type Material:
Paratype: MNHN, Paris. for Amaea hedleyi (de Boury, 1912). [Kaicher, S.D., 1980]
Holotype: ZMB 468 lost per Nakayama (2003: 20); MNHN 4252 (paratype). for Amaea hedleyi (de Boury, 1912) - Locality: Australia. [Brown, L. & Neville, B.D., 2015]
Type: Berlin Zoological Museum, No. 168; a juvenile specimen in the Paris Museum, No. 1608. for Amaea hedleyi (de Boury, 1912). [Boury, E. de., 1913]
arsint.com (2023).
17 mm, East China Sea
Distribution
as listed in source literature
de Boury, E. (1912).
Plate VIII. Fig. 7.
pp: 178.
Shell white, moderately elongated, conical. Suture fairly deep, widely open, imperforate. Embryonic whorls partly broken (in the juvenile specimen, 3 shiny whorls visible). The following 9½ whorls are convex, with very slightly oblique axial ribs, not auriculate, strongly inflected near the suture. Between the ribs are fairly thick spiral cords, which do not ascend the ribs and are only slightly raised. The last whorl bears 23 ribs (2 of which are variciform). The base is barely convex, circumscribed by a distinct funicle, with a disk radially finely costulate and concentrically ornamented with cords. The columella is supported by an elongated funicle. Aperture rounded, slightly subquadrangular. Inner peristome very thin and leaf-like. Outer peristome somewhat thickened, slightly flared in the anterior region.
Length: 10 mm; Max. diameter: 3 mm; Max. height of whorls: 5 mm.
Habitat: Australia. Type: Berlin Zoological Museum, No. 168; a juvenile specimen in the Paris Museum, No. 1608.
Kaicher, S.D. (1980).
Card #: EP1-3594.
5mm
Paratype, MNHN, Paris.
Nakayama, T. (2003).
pp: 115. Plate 6. Fig. 4-6.
figs 4-6:
Amaca (Scalina) hedleyi (De Boury, 1912) height 13.2 mm; breadth 5.4 mm (WC); fig. 6, base
arsint.com (2023).
17 mm, East China Sea
