1)6 Transactions. — Zoolocjij. 



irairarapa, hcctori, microimclulata , and aorangi, niihi (Trans. 

 N.Z. Inst., xxii., p. 224). Since writing that I see that 

 Pfeiffer has ah-eady (1855) given the name of Huttonella 

 to a group of the genus Ennea, H. and A. Adams ; I therefore 

 withdraw it, proposing the name Maoriana instead, this group 

 being endemic to New Zealand. 



EXPLANATIOKS OF PLATES XVI.-XVIII. 



Plate XVI. 



Fig. 1. a, h. Bhytida meesoni, -mihi. 



A. „ „ teeth, x 120. 



Fig. 2. a, h. Patula mutahilis, mihi. 



Plate XVII. 

 Fig. 6. a, b. Patula eremlta, mihi. 



K. „ bianca, Hutt., v. montanu. mihi, jaw. 



L. „ „ „ ,. „ teeth, x 720. 



Fig. 7. a, 6. Pitys cryptobidcns, mihi. 



c. „ „ „ aperture with lamellae. 



/- M, „ „ „ jaw. 



N. „ „ „ teeth, x 720. 



Fig. 8. fl, 6. Psyra godeti, mihi. 

 Fig. 9. Distoma, found in Psyra cjodeti. 



0. Psyra godeti, mihi, jaw. 



P. „ „ teeth, X 480. 



Plate XVITI. 

 Fig. 10, a, b. Amphidoxa fcredayi, vaWii. 



Q- « „ jaw. 



K. „ „ teeth, x 480. 



Fig. 11. a, b. PhrixgnatMis acanthinulopsis, mihi. 



S. „ „ part of jaw. 



T. „ ,, teeth, x 480. 



Pig. 12. a, b, c. Amphipeplea ampulla, Hutt., v. globosa, mihi. 

 Fig. 13. a, b, c. Potamopyrgxis corolla, Gould. One day old. 



