Hutton. — On New Zealand Land Shells. 171 



Jaw arched, thick, tapering towards the ends, smooth, without ribs, the 

 concave margin jagged. 



Dentition, 21-1-21. Laterals 8. 



Central tooth rectangular, longer than broad ; the reflexed portion 

 triangular, sinuated on each side, two-thirds the length of the base and 

 with a large cutting point. First lateral like the central tooth but larger, 

 the inner margin straighter and with a minute point ; second to fourth 

 laterals with the base nearly as broad as long, the reflexed portion deeply 

 sinuated on the inner, less so on the outer side, a small point on the inner 

 side : in the sixth to eighth laterals the inner side is less sinuated and the 

 point becomes larger. Marginals broader than long, with three points of 

 which the middle is the longest ; in the outer marginals the two inner 

 cutting points are equal and united. 



Hab. Oxford, N. Canterbury (C. Chilton). 



Amphidoxa coknea, Hutton. PL x., fig. a. 



Jaw thin, slightly arcuate, smooth, faintly striated. 



Dentition, 22-1-22. Laterals 8. 



Teeth like those of P. phlogophora except the outer marginals in which 

 the cutting points are more irregular and altogether absent in the last, 

 which is minute. 



Hab. Auckland (T. P. Cheeseman). 



Animal dark slate grey, sole of the foot dirty yellowish ; mantle 

 mottled with grey. Mantle central, slightly reflected over the peristome ; 

 tail pointed, with a mucous slit. 



Hab. Greymouth (E. Helms). 



Amphidoxa costulata, Hutton. PL x., fig. d. 



Jaw, none seen. 



Dentition, 14-1-14. Laterals 5 or 6. 



Central tooth rectangular, almost as broad as long ; the reflexed portion 

 minute, tricuspid ; the middle cusp reaching about half the length of the 

 base. Laterals like 'the central tooth, but the middle cusp reaching the 

 posterior margin. Marginals broader than long, tridentate ; in the inner 

 marginals the outer point is very small, and the two inner are united. 



Hab. Auckland (T. P. Cheeseman). 



Paeyphanta chiron, Gray. PL x., fig. b. 



Jaw, none seen. 



Dentition, 17-1-17. Laterals 7. 



Teeth like those of P. phlogophora. 



Hab. Auckland (T. F. Cheeseman). 



Paeyphanta crebfjflammis, Pfeiffer. PL xi., fig. g. 



Jaw very delicate, membranaceous, smooth. 



