138 GASTROPODA. [Aspidobranchia. 



Diameter, 3-5 mm. ; height, 4 mm. 



Dentition unknown. 



Type in my collection. 



Hob. Near Resolution Island (A. Hamilton) ; Blind Bay. Nelson. 



4. Gibbula scamnata, Fischer, 1878. Plate 38, fig. 23. 



Trochus (Gibbula) scamnatus, Fisch., J. de Conch., 1878, 66. Gibbula scam- 

 nata., Fisch., Man. Conch. (1), xi, 220, pi. 30, f. 6 ; Suter, P. Mai. S., ii, 



278. 



Shell small, subperforate, conoidal, solid, dull, spirally lirate. 

 Sculpture consisting of elevated spiral liree, 5 to 6 on the penultimate 

 whorl, 5 to 8 on the base, crossed by very distinct oblique growth- 

 striae, sometimes cutting up the liree into small nodules. Colour 

 cinereo-olivaceous, with the ribs darker, or quite black. Spire conoidal, 

 outline convex, apex acute. Protoconch convex, consisting of 2^ 

 whorls, first smooth, then spirally lirate. Whorls 5, rapidly increas- 

 ing, flatly convex, the last subangulate at the periphery ; base flatly 

 convex. Suture linear. Aperture subrhomboidal, iridescent and lirate 

 within. Outer lip sharp and slightly crenulate, edged by a broad 

 white and sulcate callus. Columella subvertical, arcuate, a little re- 

 flexed, and almost covering the small umbilicus. 



Diameter, 7-5 mm. ; height, 7 mm. (type). 



Dentition unknown. 



Type in the Mus. Hist. Nat,, Paris ? 



Hob. Oceanica (Fischer) ; Blind Bay, Nelson ; Te Onepoto, near 

 Lyttelton ; Brighton, Otago. 



Remarks. The species closely resembles C. rufozona, A. Ad., from 

 which it may be distinguished by its partly open umbilicus, its arcuate 

 columella without the indication of a tooth, its larger size, and darker 

 colour. 



5. Gibbula Suteri, E. A. Smith, 1894. Plate 33, fig. 10. 



Photinula Suteri, E. A. Smith, P. Mai. 8., i, 58, pi. 7, f. 3. Gibbula Suteri, 

 Sutsr, P. Mai. 8., ii, 278. 



Shell small, turbinate, imperforate, rather thin, slightly shining. 

 Sculpture consisting of numerous very fine spiral lirse, more distinct 

 on the base, crossed by fine growth-lines. Colour uniformly black or 

 grey, cinereous, pink, &c., longitudinally variegated and tessellated 

 with white ; very often the colour-markings are very much like those 

 of P. nitida. Epidermis thin, slightly polished. Spire conical, sides 

 slightly convex, apex acute, lower than the height of the aperture. 

 Protoconch very small, of a few smooth whorls, mostly eroded or 

 covered with Nulliporites. Whorls 5, convex, rapidly increasing, the 

 last angled at the periphery ; base slightly convex. Suture linear. 

 Aperture oblique, rounded, highly bluish iridescent and finely lirate 

 within. Outer lip sharp, edged by a silvery narrow and sulcate 



