Revised descriptions of New Zealand Cenozoic Mollusca from Beu and Maxwell (1990)
(Pl. 53j): Lissotestella alpha (Laws, 1939); topotype, GS9730, Q8/f9828, Holland's Point, Pakaurangi, Kaipara Harbour (Otaian) (apex showing microsculpture of anastomosing ridges on protoconch).
(Pl. 53k): Lissotestella alpha (Laws, 1939); topotype, GS9730, Q8/f9828, Holland's Point, Pakaurangi, Kaipara Harbour (Otaian)
Beu & Maxwell (1990): Chapter 17; p. 378; pl. 53 j,k.
Description: Height 0.85-2.2 mm, turbiniform, narrowly umbilicate. Protoconch with sculpture of very fine anastomosing ridges; teleoconch whorls convex, sculptured with spiral cords or lirae, microsculpture of minute, irregular granules. Aperture circular, peristome continuous in some species, interrupted in others; outer lip with low, rounded varix slightly behind front edge.
Comparison: Species of Lissotesta Iredale, 1915 are of similar shape to those of Lissotestella, but are smooth or have a few weak spirals in the umbilicus, and lack a varix on the outer lip.
Distribution: Kaiatan?, Otaian-Recent, New Zealand, from inner shelf to upper slope.
Cite this publication as: "A.G. Beu and J.I. Raine (2009). Revised
descriptions of New Zealand Cenozoic Mollusca from Beu and Maxwell (1990). GNS
Science miscellaneous series no. 27."
© GNS Science, 2009
(Included with a PDF facsimile file copy of New Zealand Geological Survey Paleontological Bulletin 58 in CD version from: Publications Officer, GNS Science, P.O. Box 30368 Lower Hutt, New Zealand)