86 Transactions. — Zoology. 



Named in honour of ray friend Dr. Sterki, New Philadel- 

 phia, Ohio. 



Animal.— ^a.^\ arcuated, not tapering, finely striated, with 

 a slight median projection. 



Dentition : 16 — 1—16 ; laterals, 4. Central tooth rectan- 

 gular, not much longer than broad ; the reflexed portion 

 U-icuspid, the side cusps short, middle cusp with the cutting- 

 point reaching to the posterior margin. Laterals much like 

 the central. Marginals tricuspid, the reflexed portion oblique 

 on the inner ones, the outer ones much broader than long, 

 the last small, bicuspid. 



Patula brouni, n. sp. Plate XYL, fig. 4, a, h, F, G. 



Shell minute, subdiscoidal, umbihcated, pale-horny with 

 rather distant dark-horny streaks, forming zig-zag lines on the 

 periphery and beneath ; not shining, thin and fragile, trans- 

 parent ; with very fine and close ribs, nearly straight and di- 

 rected forwards on th& surface, straight on the side and at the 

 base; about 60 in the tenth of an inch (24 per mm.). Spire 

 scarcely reaching above the last whorl. Whorls 5, narrowly 

 rolled up, slowly increasing, rounded, the last not descending. 

 Suture impressed. Aperture slightly oblique, rotundly lunar, 

 but little excavated by the penultimate whorl. Margins re- 

 gularly arched, convergent, striiight, acute, the outer lip 

 slightly advancing. Columellar margin short, arcuated, not 

 reflected. Umbilicus broad, perspective, one-third of the dia- 

 meter. 



Diameter, O'OQin. (2-25mm.) ; length, 004in. (1mm.). 



Hab. Under decaying leaves and amongst mould in the 

 subalpine bush. South Island : White Horse Hill, Hooker 

 Valley. (H. S.) 



Named in honour of Captain Thomas Broun, of Karaka, 

 Drury. 



Tliis shell is closely alHed to Pat. sterkiana, and has the- 

 same fine ribs, but may at once be distinguished from it by its 

 smaller size, the different markings, and the somewhat different 

 course the ribs take. 



Animal. — Jaw very thin, arcuated, finely striated, not 

 tapering, with a slight median projection. 



Dentition : 14—1—14 ; laterals, 4. Centrcil tooth rect- 

 angular, longer than broad, reflexed portion tricuspid, the 

 central cusp long, reaching almost to the posterior margin of 

 the base, with a short cutting-point. First two laterals much 

 the same as the central tooth, the other two with longer 

 cutting-points. Marginals with the base much broiJ^der than 

 long, with three long cutting-points; the last rudimentary,, 

 jiiinute, unicuspid. 



