SUTEK : NKW ZEALAND LAND MOLLUSCA. 37 



Xote. — Lao:ma (Phkixgn-athus) ACANTniNULorsrs, Sut., Avhich I 

 (Icscribed in Trans. New Zeal. Inst., vol. xxiii (1891), is a synonym. 

 of Laoma {PJirixgnathus) phrynia, Hutton. Since my description 

 was published, well-preserved specimens of L. plirijnia have come 

 into my possession, and, after careful comparison, 1 have come to 

 the conclusion that my species is nothing more than a local variety. 



9. Laoma (Phrixgnathiis) Moellexdorffi, n.sp. PI. IV, Figs. 19-21. 



Shell very small, depressly-turbinate, pale-horny with irregular 

 radiate streaks of chestnut ; faintly glossy, very thin, semi-transparent, 

 smooth, microscopically decussate. Spire broadly conoidal, arched ; 

 periphery slightly keeled; whorls 4, gradually increasing in size, 

 convex, the last not descending in front. Protoconch smooth, blunt. 

 Aperture transverse, lunate ; peristome straight, acute, outer lip some- 

 what keeled, basal lip broadly arched, columella lip subvertical, 

 slightly reflexed, and callous. Umbilicus narrow, deep, one-sixth of 

 the major diameter. Base rounded. Diam. 25, alt. l"5mm. 



Type in my collection. 



iZffS.— Mt. Wellington lava-fields, Auckland (H. S.). 



This is another species closely allied to Z. plirynia., but it is smaller, 

 more depressed, is not ribbed, is microscopically decussate, and has 

 a slightly narrower umbilicus. Named in honour of Dr. 0. F. von 

 MiJllendorff, Manila. 



10. Laoma (PnEixGXAxnus) Hamiltoxi, n.sp. PI. IV, Figs. 22-24. 



Shell minute, subdiscoidal, umbilicated, yellowish-horny, glossy, 

 pellucid, smooth, with distinct lines of growth, impressed at the 

 suture, not decussate. Spire flat, but little elevated ; periphery 

 rounded; whorls Z\^ slowly and regularly increasing, convex, the 

 last not descending. Protoconch microscopically spirally striate. 

 Aperture diagonal, rotundly lunate ; peristome straight, acute, outer 

 and basal lip regularly rounded, columella almost straight, oblique, 

 much reflexed. Umbilicus about one-eighth of the diameter, deep. 

 Base rounded. Diam. maj. 2-5, min. 2 ; alt. l"25mm. 



Type in my collection. 



Hah. — Macquarie Island, where it was found by Mr. A. Hamilton, 

 of Dunedin, in whose honour the species is named. 



The specimens were kindly given to me by Prof. J. T. Parker, 

 of Dunechn. 



This species has its nearest allies, such as Laoma occidtux. Cox, etc., 

 in Tasmania ; and it is no doubt also very near to L. (Jamphellica, 

 Filhol, but I have not yet seen that species. 



11. Laoma (PnraxGNATHUs) srBLuciDA, n.sp. 



Shell small, depressly-turbinate, subperforate, whitish-horny, glossy, 

 semi-transparent, smooth, with faint, radiate, rufous streaks extending 

 to the umbilicus, not decussate. Whorls 5, gradually increasing, 

 flatly rounded ; suture impressed ; periphery rounded. Protoconch 

 smooth. Aperture transverse, lunate ; peristome straight, acute, 

 slightly callous ; outer and basal lip regularly arched, columella lip 



