SUTER : OlSr MOILTJSCA FEOM new ZEALAND. 23 



crossed and beaded by strong and sbai'p equidistant radiate riblets, 

 dividing the interstices into regular squares ; remainder of the whorls 

 with fine growth-lines. Colour whitish, light horny. Spire low, 

 with convex outlines, very little higher than the aperture ; apex 

 rather blunt. Protoconch small, globular, of one smooth convex 

 whorl. Whorls 4, rather rapidly increasing, somewhat flattened 

 below the suture, then convex ; base convex. Suture subcanaliculate. 

 Aperture circular, slightly iridescent within. Peristome sharp, the 

 ends converging and nearly meeting, united by a white parietal 

 callosity. Columella vertical, arcuate, slightly expanded. Umbilicus 

 about one-third of the diameter, deep and scalar. Diam. max. 5, 

 min. 4 mm. ; height 3-2 mm. 



Rah. — Near the Snares Islands, in 50 fathoms, empty shells only 

 (Capt. J. Bollons). 



It is nearly allied to M. pUcatula, Murdoch & Suter, but the lirse 

 are much more numerous, the umbilicus narrower and distinctly 

 spirally lirate, etc. Type in my collection. 



3. LroTiA soLiTARiA, n.sp. PI. TI, Figs. 2, 3. 



Shell small, discoidal, solid, umbilicated. Sculpture ; the fiat 

 surface having a peripheral stellate carina, the processes triangular 

 and directed forward ; the base bordered by a smooth and sharply 

 elevated carina ; a few radiate folds outside the suture and round the 

 umbilicus. Colour yellowish-pink. Spire perfectly fiat. Protoconch 

 minute, fiat, indistinct. Whorls 3 J, rapidly increasing, fiat, the last 

 very little convex above, slightly concave between the two keels; 

 base convex inside the carina. Suture superficial, slightly margined. 

 Aperture circular. Peristome continuous, slightly thickened, orna- 

 mented with two processes produced by the keels. Columella arcuate, 

 thick. Umbilicus moderately wide, showing the apical whorls. 

 Operculum not seen. Diam. 2'75, height 1 mm. 



Sab. — Near Little Barrier Island, in 20 fathoms (R. H. Shakespear). 



The only specimen in my possession is not an adult shell. The 

 species is allied to L. stelhris, Ad. & Eve. Type in my collection. 



4. LlOTIA SEREATA, U.Sp. PI. II, FigS. 4, 5. 



Shell small, discoidal, rather solid, umbilicated. Sculpture con- 

 sisting of fine and slightly wavy radiate riblets ; periphery of the flat 

 whorls adorned with distant sharp denticles; base on the outside 

 with a carina with low and rounded tubercles ; margin of umbilicus 

 more or less crenulate. Colour white. Spire flat. Protoconch very 

 small, of one flat whorl only. Whorls 3^, rapidly increasing, flat 

 above, with a pronounced angle at the periphery and a rounded 

 carina below, space between them convex ; base flat. Suture 

 impressed, the serrate processes extending over it. Aperture circular, 

 slightly oblique. Peristome continuous, with a callous varix. Columella 

 arcuate, with an outer tubercle at its base. Umbilicus rather large 

 and deep. Diam. 2-5, height 1 mm. 



JSab.—^eax Little Barrier Island, in 20 fathoms (P. H. Shakespear). 



This species is nearly allied to the foregoing, but distinct from it in 

 several characters. Type in my collection. 



