axis with a rather narrow deep umbiHcus ; mouth rather wide, peri- 

 stome thin, slightly reflexed near the axis, and rather sinuous neiar 

 the suture of the spire. Diam. ^rd of an inch. 



Hab. Auckland ; Major Greenwood and Br. Sinclair. 



5. Helix Ide. 



Shell depressed, pellucid, whitish, brown rayed ; spire flat or rather 

 sunk in the middle whorl, close-pressed, convex, with rather distant 

 very slight spiral membranaceous ridges, and larger and more distinct 

 membranaceous cross-ridges, fringed on the edge with hair-like elonga- 

 tions ; last whorl rounded externally in front, slightly flattened near 

 the axis ; axis large, umbilicated, showing the volutions. Diam. \ of 

 an inch. 



Hab. Auckland. 



6. Helix (Zonites) coma, Gray, Fauna N. Z. 263. n. 224. 

 Hab. Auckland (abundant) ; Major Greenwood. 



7. Helix Egesta. 



Shell depressed, dark brown ; spire scarcely raised, at length irre- 

 gular and rather distorted ; whorls subcylindrical, regularly and closely 

 spirally grooved, with rather distant, thick, broad, membranous cross- 

 ridges ; last whorl subcylindrical, often twisted rather in front of the 

 regular course, rounded externally and in front, and closely spirally 

 grooved in front ; axis widely umbilicated, showing all the whorls. 

 Diam. ^th of an inch. 



Hab. Auckland ; Dr. Sinclair and Major Greenwood. 



8. Zdnites Chiron. 



Shell depressed, dark olive-green, covered with a thick, polished 

 periostraca, and crossed with rather sinuous, concentric, membranous 

 ridges ; spire rather convex, rounded ; whorls rather convex, last 

 spread out, rounded on the edge and convex in front ; axis widely 

 umbilicated, showing the lower whorls ; mouth roundish, sublunate ; 

 peristome thin, outer lip rather expanded behind, and separated 

 from the penultimate whorl by a slight notch. Diam. \ of an inch. 



Hab. Auckland ; Major Greenwood. 



The upper surface resembles a miniature Helix Busbyi, but the 

 under surface is very different. 



9. ZoNiTES? Coresia. 



Shell depressed, dark olive-green, with brown cross-bands covered 

 with a thick, smooth, polished periostraca ; spire scarcely raised, 

 rather convex ; whorls convex, last expanded, rounded on the edge 

 and in front ; axis broadly umbilicated, showing all the whorls ; mouth 

 roundish, sublunate ; peristome thin, with the periostraca inflexed 

 when dry. Diam. ^th of an inch. 



Hab. Auckland, New Zealand. 



This shell is exactly like a very minute specimen of Helix Busbyi. 

 It differs from the former, Z. Chiron, in being smaller, more depressed, 

 and in the umbilicus being much wider, showing the front side of the 

 upper whorls, which appear rather transverse. 



