Hutton. — 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 geeenwoodi, Gray. PI. 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). 

 Khytida austbalis, Hutton. PI. 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). 

 Ehytida citrina, Hutton. PI. x., fig. k. 

 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 (E. Helms). 

 Ehytida patula, Hutton. PI. 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 (E. Helms). 

 In specimens from Balclutha the dentition is 14-0-14. 



