228 Transactions. — Zoology. 



juargin somewliat reflected, descending straight. UniLilicus 

 narrow, deep. 



Diameter, 0-07in. (l-7mni.); height, 0-Ooin. (l-3mm.). 



Hab. In mould in the bush. Very scarce ; only two 

 specimens. North Island : Fortv-milo Bush ; HastwelL 

 (H. S.) 



Hyaliiia allocJtroida, n. sp. Plate XY., fig. 14, a~c. 



Shell very small, depressed ; the first three whorls colour- 

 less, the penultimate yellowish-horny, and the last horny- 

 fulvous ; very thin, pellucid, with distant fine ribs, directed 

 backwards on the surface and somewhat arcuated on the side ; 

 about 30 ribs in the tenth of an inch (12 per mm.). Dis- 

 tinctly reticulated between the ribs. Spire slightly elevated. 

 Whorls 5, swollen, regularly increasing, the last not descend- 

 ing. Suture deep. Aperture slightly oblique, rotundly lunar, 

 little excavated by the penultimate whorl. Peristome straight, 

 acute, margins convergent, columellar margin slightly re- 

 flected, sliglitly bent downwards. Umbilicus very narrow. 



Diameter, 0-06in. (I-5nnn.) ; height, 0-OIin. (1mm.). 



Hah. Under dead leaves in mould. Scarce. North 

 Island: In the bush, near Mauriceville. (H. S.) 



Doubtfully included in Il/jaliJia. A variety occurs near 

 the Mount Cook Hermitage. 



Hyult/ta allncliroida, n. sp., var. scrlcata, n. var. Plate NV., 

 fig. 15, a, b. 



Shell very suiall, depressed, yellowish-horny, thin, pel- 

 lucid, closely and finely ribbed, ribs bent backwards on the 

 surface, slightly undulating on the periphery ; about 60 ribs 

 in the tenth of an inch (25 per mm.). Spire slightly elevated. 

 \Yhorls 5, slowly and regularly increasing, narrow, rounded, 

 the last not descending. Suture deep. Aperture oblique, 

 lunar, higher than broad, little excavated by the penultimate 

 wliorl. Peristome straight, acute, upper margin somewhat 

 advancing, columellar margin not reflected, obliquely bent 

 downwards. Umbilicus very narrow. 



Diameter, 0-05in. (l-2nnn.) ; height, 0-C3in. (0-7mm.). 



Hah. Under dead leaves and rotten wood in the bush. 

 Found onl\- one specimen. North Island: Forty-mile Bush ; 

 Hastwell. ' (H. S.) 



Hyalina allochroida, n. sp., var. laicuinbllicaia, n. var. 

 Plate XV., fig. 16, a, b. 



Shell ver>- small, depressed, yellowish-horny, shining, 

 pellucid, thin, with rather distant ribs, bent backwards on the 

 surface. obli(pTe and undulated on the periphery. Interstices 

 reticulated. Spire slightly elevated, apex smooth, colourless. 

 Whorls 5, i-egularl\ and slowly increasing, narrow, rounded, 



