Hurron.—On New Zealand Land Shells. 167 
Dentition, 26-1-26. Laterals about 10. 
Central tooth rectangular, longer than broad ; the reflexed portion tri- 
cuspid, short, but with a long middle cusp reaching nearly to the posterior 
margin, and with a short point. The first six laterals are like the central 
tooth, the seventh to ninth with the reflexed portion rather longer, and the 
inner side-cusps obsolete. Marginals broader than long, tridentate; the 
inner with the middle point longer than the others; the outer with the 
three points nearly equal. | 
Hab. Auckland (T. F. Cheeseman). 
HELIX crEENWOODI, Gray. Pl. x., fig. P. 
Jaw none. 
Dentition, 10-0-10 ; varying from 9 to 11. 
Transverse rows of teeth forming an acute angle. Teeth robust, all 
aculeate, smooth, increasing from the centre to the ninth, which is the 
largest; the tenth much smaller; the eleventh very minute or absent. 
Hab. Auckland (Cheeseman). 
Rayripa AvusTRALIS, Hutton. Pl. x., fig. s. 
Jaw, none. 
Dentition, 16-0-16. 
Transverse rows of teeth forming an acute angle. Teeth slender, all 
aculeate, smooth, increasing from the centre to the fourteenth, which is the 
largest; fifteenth small; sixteenth still smaller, but present in both the 
individuals that I have examined. 
Hab. Stewart Island (T. Kirk). 
Rayripa cirrina, Hutton. Pl. x., fig. R. 
Jaw, none. 
Dentition, 17-0-17. 
Transverse rows of teeth forming an acute angle. Teeth slender, all 
aculeate, smooth, increasing in size from the centre to the fifteenth, which 
is the largest; sixteenth nearly as large as the fifteenth ; seventeenth much 
smaller. 
Hab. Greymouth (R. Helms). 
Raytipa PATULA, Hutton. Pl. x., fig. Q. 
Jaw, none. 
Dentition, 18-0—18. 
Transverse rows of teeth forming an acute angle. Teeth robust, all 
aculeate, increasing from the centre up to the seventeenth, which is the 
largest ; eighteenth very small. All the teeth smooth, except the seven- 
teenth, which has an angular ridge running down the outer side. 
Hab, Greymouth (R. Helms). 
In specimens from Balclutha the dentition is 14-0-14. 
