Laoma.} GASTROPODA. 755 



ton) ; Forty-mile Bush, type (H. &.). South Island : Hooker Valley 

 (H. S.) ; Dunedin ; The Nuggets, Port Molyneux (A. Hamilton). 

 The shell is mostly found in mould in the native bush. 



27. Laoma Moellendorffi, Suter, 1896. Plate 10, figs. 10, a, b. 



Laoma (Phrixgnathus) Moellendorffi, Suter, P. Mai. S., ii, 1896, 37, pi. 4, 

 f. 19-21. 



Shell minute, depressed turbinate, horny streaked with rufous, 

 smooth, moderately perforate, very thin, semitransparent, faintly 

 glossy. Sculpture microscopic ; the post-embryonic whorls with ex- 

 ceedingly fine oblique growth-lines, decussated by spiral lines. Colour 

 pale-horny with irregular radiate . streaks of chestnut. Spire broadly 

 conoidal, its height less than that of the aperture ; outlines convex. 

 Protoconch of 1^ whorls, flatly convex, smooth. Whorls 4, regularly 

 increasing, lightly convex ; periphery distinctly angled, base rounded. 

 Suture impressed. Aperture transverse, lunate. Peristome straight, 

 acute. Outer lip angled. Columella subvertical. Inner lip callous 

 and lightly reflexed. Perforation about one-sixth of the greatest 

 diameter, deep, open. 



Diameter, 2-5 mm. ; height, 1-5 mm. 



Animal unknown. 



Type in my collection. 



Hob. North Island : Helena Bay ; Waiwera (H. S.) ; Wade ; 

 Mount Wellington lava-fields, type (H. S.) : Waiheke Island (H. S.). 



Exemplum sinistrorsum, Suter, P. Mai. S., vi, 157. 



Near Cowes Bay, Waiheke Island, I found a beautifully deve- 

 loped sinistral specimen of this species. The growth-lines are much 

 more oblique, the circumference slightly oval, and the last whorl 

 descending ; the specimen has 4 whorls, the diameter being 3-25 mm. 



28. Laoma Phrynia, Hutton, 1883. Plate 9, figs. 23, a, b. 



Phrixgnathus Phrynia, Hutt., N.Z.J.S., i, 1883, 476 ; T.N.Z.I., xvi, 177, 197. 

 Laoma Phrynia, Hutt., Man. Conch. (2), viii, 61, pi. 23, f. 88-90. 

 L. (Phrixgnathus) Phrynia, Hutt. : Hedley and Suter, P.L.S. N.S.W. (2), 

 vii, 649 ; Suter, J. de Conch., xli, 279. Phrixgnathus acanthinulopsis, 

 Suter, T.N.Z.I., xxiii, 92, pi. 18, f. 11. 



Shell minute, conoidal, umbilicated, epidermis plicated, horny 

 with rufous streaks, thin, semitransparent, lightly shining. Sculp- 

 ture, of the post-nuclear whorls consisting of distant retractive mem- 

 branous riblets, about 5 per millimetre, very often rubbed off ; the 

 interstices with fine growth-lines, crossed by obsolete spirals, which, 

 however, become more distinct on the base. Colour pale-horny, 

 radiately streaked with rufous. Spire conoidal, of the same height 

 as the aperture ; outlines lightly convex. Protoconch convex, of \\ 

 smooth turns. Whorls 5, convex ; periphery lightly angled, bas< 



