Cycloscala spinosa
Nakayama, 2000
Description:
Dimensions range from 5 mm - 7.3 mm high and 3 mm - 4 mm wide.
Width to height ratio: 0.6:1 ~ 0.55:1
Shell: narrowly to widely scalariform; minute to small. Exterior colour dull white. About 7.5 whorls; protoconch with ~3 whorls polygyrate, conical with microscopic axial striae; teleoconch with ~4.5 whorls. Spire uncoiled from the first teleoconch. Approximately 18 - 20 costae on the body whorl. Costae are erect, strongly fluted, with nodules. Costae with a blunt coronation on shoulder; slightly recurved. Intercostal spaces without spiral sculpture. Aperture ovate; peristome complete; outer lip reflexed.
Distribution:
off Minabe, Kii Peninsula, and Amami-Oshima Island, Japan
Habitat:
30-100 m
Etymology:
[latin] from spinosus = thorny, full of thorns, prickly, covered in spines, spiny
Type Material:
Holotype: NSMT-Mo 71428 for Cycloscala spinosa Nakayama, 2000 - Type Locality: Off Minabe, Kii Peninsula, Japan, at about 30 m deep. [Nakayama, T., 2003]
Holotype: NSMT Mo- 71425 for Cycloscala spinosa Nakayama, 2000 - Type Locality: off Minabe, Kii Peninsula, Japan, at about 30 m (Nakayama 2003: 37).. [Brown, L. & Neville, B.D., 2015]
Nakayama, T. (2003). pp: 141. Plate 19. Fig. 11-13.
figs 11-13: Cycloscala spinosa Nakayama, 2000
height 7.3 mm; breadth 4.0 m (holotype);
fig. 13, protoconch
Distribution
as listed in source literature
Nakayama, T. (2000).
pp: 280. Fig. 28.
Fig. 28. Cycloscala spinosa n. sp.
Holotype (NSMT Mo-71425)
height 7.3 mm; breadth 4.0 mm.
pp: 286.
Nakayama, T. (2003).