752 GASTROPODA. [Pulmonata. 



conoidal, a little lower than the aperture ; outlines convex. Proto- 

 eotich of 1| smooth rounded whorls, convex. Whorls 5J, slightly 

 convex ; periphery lightly angled, base flatly rounded. Suture simple, 

 deep. Aperture oblique, subdepressed, lunate. Peristome simple, 

 straight, acute. Outer lip roundly angled. Columella vertical, short. 

 Inner lip thin, slightly reflexed above. Perforation moderate, quite 

 open, deep, about one-sixth of the greatest diameter of the shell. 



Diameter Maj., 3-5 mm. ; min., 3 mm. : height, 2 mm. 



Dentition. Suter, T.N.Z.I., xxiv, 297, pi. 22, f. 38, 39; Man. 

 Conch. (2), ix, pi. 1, f. 3, 4. 



Jaw (Plate 1, fig. 19) arcuate, consisting of about 20 broad 

 slightly imbricating plaits, which are papillate. 



Eadula (Plate 1, fig. 19) having the formula 26 + 1 +26 ; central 

 tooth unicuspid, lateral and marginal teeth bicuspid. 



Type in the British Museum. 



Hob. North Island : Whangarei ; Mount Wellington lava-fields ; 

 Ohaupo (Musson) ; Little Barrier Island (Adams) ; Waiheke Island 

 (H. S.) ; Helena Bay; Wade; Waitakerei ; Thames; Taranaki 

 (Cheeseman) ; Mount Pirongia (Urquhart) ; Waimarama (A. Hamil- 

 ton) ; Seventy-mile Bush (Strickland). South Island : Kenepuru 

 (McMahon). 



22. Laoma Haasti, Hutton, 1883. Plate 9, figs. 22, a, b. 



Phrixgnalhus (?) Haastii, Hutt., N.Z.J.S., i, 1873, 476; T.N.Z.L, xvi, 177, 

 198. Laoma Haastii, Hutt,, Man. Conch. (2), viii, 62, pi. 23, f. 91-93. 

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

 vii, 650 ; Suter, J. de Conch., xli, 280, pi. 9, f. 5, a, b. 



Shell minute, depressed, narrowly umbilicated. smooth, faintly 

 shining, cinereous banded with brown. There is no sculpture, except 

 fine oblique growth-lines, plicated at the suture, and obsolete micro- 

 scopic spiral lines. Colour cinereous, with irregular radiating and 

 zigzag bands of reddish-brown, very faint on the base. Spire conoidal, 

 a little higher than the aperture ; outlines slightly convex. Proto- 

 conch convex, of 1| smooth volutions. Whorls 4|, slowly increasing, 

 rounded ; periphery distinctly angled, base convex. Suture im- 

 pressed. Aperture subvertical, Innately subcircular. Peristome thin, 

 arched. Columella vertical, short. Inner lip slightly expanded. 

 Umbilicus moderate, pervious, showing the penultimate whorl, about 

 "in -sixth of the greatest diameter of the shell. 



Diameter Maj., 3 mrn. ; min., 2-5 mm. : height, 1-75 mm. 



. I 1'iindl unknown. 



T//pc in the Canterbury Museum, Christchurch. 



Hab. South Island : Mount Somers, on limestone cliffs, type 

 (Haast) : St. Helens Station, Amuri (F. Suter) ; Akaroa ; Riccarton 

 Bush. Christchurch (H. S.) ; Waitaki (Captain Hntton) ; Albury 

 Rocks (\V. \V. Smith). 



