Comprehensive DescriptionRead full entry
“Coluzea mariae n. sp. Pl. 35, fig. 8.
Shell fusiform, with broadly conic spire and long, straight, tapered canal. Whorls 8, including a smooth papillate typical protoconch of 2 whorls. Spire rather squat, less than half the height of the aperture plus canal; angle 55°, outline strongly keeled just below the middle of the whorls and excavated below at suture. Sculptured with distant sharply raised spiral cords, three above and two below the peripheral carina on spire whorls and about 24 on the base and neck; six of these are stronger than then rest and occupy the base from level with the top of the aperture to the commencement of the neck and canal. All postnuclear whorls crossed by numerous weak axial folds which crenulate the peripheral carina, forming 23 to 24 blunt tubercles per whorl. The axials become rapidly obsolete over the base. Colour uniformly white.
Height, 81.0 mm.; diameter, 21.5 mm.
Locality: 60-70 fathoms off Eastern Otago (trawled by Captain J. Black, Dunedin).
Holotype: Auckland Museum.
This species is named in honour of Mrs. Black.
Mr. R. K. Dell, of the Dominion Museum, Wellington, informs me that there is more than one species of the spiralis group in New Zealand waters. The type of spiralis was neither figured nor adequately described. No dimensions were given and the location cited was simply “New Zealand. Mus. Cumming.” However, Hutton 1880 (Man. N.Z. Moll., p. 50) synonymised his Fusus pensum, 1873 (Kapiti Island) with spiralis and Tryon, 1881 (Man. Conch. 3, pl. 85, fig. 593) figured Adams and Reeve’s Fusus spectrum as a synonym of spiralis. The point is that all these references are to a narrow shell with a spire angle ranging between 32° for pensum to 42° for Northland “spiralis” = Columbarium suteri Smith, 1915.
The Otago shell represents a distinct species with a short broadly conic spire (55°) and very numerous peripheral crenulations.”
(Powell, 1952: 180)