Cirsotrema zografakisi
Poppe, Tagaro & Brown, 2006
Description:
Dimensions range from 39.9 mm - 95.6 mm high and 32.1 mm wide.
Width to height ratio: 0.8:1 ~ 0.34:1
Shell: elongate pyramidal; heavy; moderately small to large. Exterior colour dirty white. About 8 whorls; protoconch missing in holotype. Suture deep and hidden by the costae. Imperforate: closed by the columellar callus. Approximately 22 costae on the body whorl. Costae are blade-like. Costae slightly angled below the suture. Intercostal spaces strong spiral cords. Interstices with approximately 9 spiral striae per whorl. Base with a strong basal cord crossed by the costae. Aperture round.
superficially resembles Cirsotrema mitoukai (Ozaki, 1958) except C. mitoukai has more convex whorls and the costae do not extend over the basal disc. Cirsotrema rugosa, Kuroda & Ito, 1961 also appears similar, however the costae in C. rugosa are strongly peaked at the shoulder
Distribution:
northern coast, Western Australia
Habitat:
500 m, dredged
Etymology:
Named for Michael Zografakis who donated the shell to the NT Museum
Type Material:
Holotype: Museum and Art Gallery of Northern Territory [NTM] P33458 for Cirsotrema zografakisi Poppe, Tagaro & Brown, 2006 - Locality: Scott Reef, North Coast Western Australia. Dredged 500m. [Poppe, G. T.; Tagaro, S. P.; Brown, L., 2006]
Poppe, G. T.; Tagaro, S. P.; Brown, L. (2006). pp: 35.
Distribution
as listed in source literature
Poppe, G. T.; Tagaro, S. P.; Brown, L. (2006).