134 GASTROPODA. [Aspidobranchia. 



almost a white ground-colour, with 5 separate distant bands ; others 

 have a pinkish ground-colour, with darker markings between the 

 principal bands ; whilst in some the bands on the last whorl are broken 

 up into dots. Spire very short. Whorls 5, the last very large, rapidly 

 descending. Suture distinctly marked. Aperture large, round. Outer 

 lip thin, edged with a thin band of white, inside iridescent. Columella 

 subvertical, semicurved, expanding as a callus over the umbilicus 

 (Iredale). 



Diameter, 12mm.; height. 13mm. Diameter. 11 mm. ; height, 

 11 mm. 



Animal unknown. 



Type in the Canterbury Museum, Christchurch. 



Hob. Sandfly Bay, Otago Peninsula (type) ; near Cape Saunders ; 

 Shag Point, Otago. 



3. Photinula nitida, Adams and Angas, 1864. Plate 38, fig. 20. 



Gibbula nitida, Ad. & Aug., P.Z.S., 1864, 36; Man. Conch. (1), xi, 217, 

 pi. 37, f. 25-27 ; Suter, P. Mai. S., ii, 277. Chrysostoma inconspicua, 

 Button, C.M.M.. 36. 



Shell small, conical, narrowly umbilicate, rather thin, shining. 

 Sculpture consisting of very delicate spiral lirse, more prominent on 

 the base, about 10 on the penultimate whorl, 7 to 8 on the base, crossed 

 by very fine, close, oblique growth-lines. Colour olive-yellow, grey, 

 or purplish-brown, marked with numerous continuous capillary white 

 spiral lines, and longitudinal olive or brown flames, generally broken 

 into oblong quadrangular tessellations on the spaces between the 

 white lines : sometimes the whole shell is uniformly purplish-brown, 

 bluish-black, or black. Spire elevated, with a convex outline, usually 

 a little higher than the aperture. Protoconch broadly convex, of 

 2| smooth whorls. Whorls 6, rapidly increasing, convex, the last 

 slightly angular around the periphery ; base flatly convex. Suture 

 linear. Aperture rounded quadrate, iridescent and lirate within. 

 Outer Up very finely creuulated, edged by a narrow border tessellated 

 with black and olive, followed by a broad iridescent callosity. Colu- 

 mella vertical, concave, a little expanded above. Umbilicus funnel- 

 shaped, half-hidden by the expansion of the columella. 



Diameter, 5'5 mm. ; height, 6-5 mm. Diameter. 7 mm. ; height, 

 8 mm. 



Jaws. None. 



Dentition. Hutton, T.N.Z.I., xv, 124, pi. 14, f. N. 



Type in the British Museum. The type of C. inconspicua is in the 

 Dominion Museum, Wellington. 



Hob. Coasts of the North and South Islands ; on rocks near 

 low-water mark, but local in distribution. 



Remarks. The peculiar white spiral striae and longitudinal flames 

 are a fairly constant character. 



