Narvaliscala flindersi
(Cotton & Godfrey, 1938)
Description:
Dimensions range from 24 mm - 24 mm high and 7 mm wide.
Width to height ratio: 0.29:1 ~ 0.29:1
Shell: Elongate, acuminate; moderately small. About 16 whorls; protoconch with 1-2 whorls smooth, sharp, inconspicuous; teleoconch with 12-14 whorls rounded. Suture impressed. Imperforate. Approximately 25 costae on the body whorl. Costae are rounded ribs. There is a single varix on each whorl. The varix is roughly every whorl. Intercostal spaces with spiral striae. Interstices with approximately 6 spiral striae per whorl. Base smooth, defined by a fine basal rib. Aperture circular.
Compared with Narvaliscala dorysa Iredale, 1936, N flindersi differs in the greater height of the individual whorls, and their roundness. [Cotton & Godfrey, 1938:203], Weil et al. [1999:138] comment this species is similar to Opalia dorysa Iredale, 1936, but can be distiguised as Narvaliscala flindersi has a greater number of costae per whorl
Distribution:
off South Australia; Great Australian Bight [Cotton & Godfrey, 1938:203]
Habitat:
549 m
Etymology:
Most likely named after Matthew Flinders
Type Material:
Holotype: South Australian Museum D13303 [as Scala (Narvaliscala) flindersi Cotton & Godfrey, 1938] - Locality: 120 miles west of Eucla, Great Australian Bight, 300 fathoms [549 m]. [Cotton, C. & Godfrey, F.K., 1938]
Cotton, C. & Godfrey, F.K. (1938). Plate XVII. Fig. 7.
Fig. 7. Scala (Narvaliscala) flindersi sp. nov. (X
Distribution
as listed in source literature
Cotton, C. & Godfrey, F.K. (1938).
Plate XVII. Fig. 7.
Fig. 7. Scala (Narvaliscala) flindersi sp. nov. (X
pp: 203.
Kaicher, S.D. (1981).
