Priscoficus alectodens n.sp. (Plate 25; Figs 33, 34.)
Shell of moderate size, thin and fragile. Spire-whorls staged, with a wide, slightly concave shoulder and short, slightly concave, sloping sides. Body-whorl contracting rapidly on the base to a long, narrow canal which is not notched anteriorly. Sculpture: the spire-whorls bear sharp tubercles on the shoulder-angle, about 20 on each of the early whorls but decreasing on later ones to 18, 16 or even fewer. Body-whorl having three well-spaced rows of strong, sharp, laterally extended tubercles, the middle row forming the periphery. The whole surface marked by spiral cords with wide, flat interspaces, several times the width of the cords. The spirals differ greatly in strength, some, especially each one on the tubercled bands, being very strong, others can scarcely be seen. Between the suture and the top row of tubercles there are four spirals on earlier whorls, but the number on the adult is uncertain. Between the top and middle tubercled bands are four spirals on the immature specimen and seven on the larger one, the top one and the lowest three being much weaker than the others. Between the middle and the bottom tubercled band are three strong cords, with a weak to faint thread in all interspaces except the second lowest. Between the lowest band and the anterior end of the shell are some 29 spirals, the top six alternating markedly in strength; the next four, that is, those about the junction of the base and neck, are all strong; and the next 10 on the neck alternate in strength. Anteriorly are about nine, closely placed, wavy threads.
Height, 47 mm.; diameter, 25 mm. (body fragment, holotype).
The dimensions of a complete adult probably about 65 × 35 mm.
Locality: Hampden Beach. (Bortonian Stage.)
This is probably the species from Kakahu listed by Finlay and Marwick (1937, p. 119, pl. 16, fig. 18) as Priscoficus n.sp. A. Apology may be due for naming such poor material, but the sculpture of the body-whorl is clearly shown and is quite distinctive.