PkfWicohflix.] GASTROPODA. 665 



Hab. New Zealand (Hochstetter) ; Whangarei ; near Auckland ; 

 Motutapu Island (A. Suter) ; Ohaupo (T. Urquhart) ; Wangantii (R. 

 Murdoch) ; Forty-mile Bush (H. S.) ; Nelson ; Fortrose, Southland 

 (Miss Rich). 



Remarks. This is a very rare species, but more often met with in 

 the North Island. It is nearly allied to P. pilula. Reeve. 



2. Phenacohelix leptalea, Suter, 1907. Plate 11, fig. 4. 



Flammulina (Phenacohelix) leptalea, Sut., P. Mai. S., vii, March, 1907, 237, 

 pi. 22, f. 4. 



Shell small, subglobular, fragile, translucent, umbilicated, closely 

 costate. Sculpture formed by radial riblets, about 6 per millimetre, 

 straight above, slightly sinuate on the periphery and extending to the 

 umbilicus ; the costse are thread-like, sharp ; the interstices with 

 numerous fine growth-lines, which are decussated by equally fine and 

 close spiral lines. Colour light fulvous, with light zigzag markings of 

 brown. Epidermis very thin, not shining. Spire broadly conoidal. 

 with obtuse apex, its height about two-thirds that of the aperture. 

 Protoconeh of H whorls, smooth, convex, microscopically finely and 

 densely spirally striate. Whorls 4|. convex, regularly increasing, the 

 last indistinctly shouldered, and with the periphery slightly flattened ; 

 base rounded. Suture deeply impressed. Aperture vertical, lunate. 

 Peristome sharp and straight. Outer lip convex ; basal lip somewhat 

 flattened. Columetta subvertical, concave, a little callous, and partly 

 spread out over the umbilicus, which is moderate, deep ; diameter, 

 "7 mm. 



Diameter Maj., 4-5 mm. ; min., 4 mm. : height, 3-7 mm. 



Animal unknown. 



Type in my collection. 



Hab. Kaihu, Hokianga. type (Strickland) ; Waitakerei Range ; 

 Waiwera (H. S.) ; Whangarei (A. Suter). 



Bemarks. This species is closely related to P. Ponsonlyiii. Suter, 

 but is smaller, much more globose and fragile, the colour-markings are 

 generally of a different pattern, the riblets more distant, and the 

 umbilicus a little narrower. 



3. Phenacohelix perplexa, Murdoch, 1897. Plate 26,. fig. 6, a, b. 



Flammulina (Phenacohelix) perplexa, Murd., P. Mai. S., ii, 161, figs, in text. 

 Shell globosely depressed, umbilicated. thin, not shining, semi- 

 transparent, finely costate. Sculpture formed by slightly unequal 

 and somewhat inequidistant radiate sharp riblets. about 8 per milli- 

 metre, sloping slightly backward on the upper surface, a little undu- 

 lating at the periphery, straight on the base ; interstices with fine 

 growth-lines, more or less distinctly reticulated by microscopic spiral 

 lines. Colour pale brown, base occasionally darker, spotted and 

 reticulated with reddish-brown, the reticulations frequently extending 



