154 Trans act ions. — Zoology. 



Genus XXVIII. Rhenea, Hutton, 1893 (Elaea, Hutton, 

 1884, not Ziegler, 1833). 



171. B. corcsia, Gray, sp. 1850. 



(II.), p. 24. (IV.), vol. i. (2), pi. 26, fig 15. North Island. 



172. B. jeffreysiana, Pfeiffer, sp. 1854. 



(II.), p. 24. (IV.), vol. i. (2), pi. 26, fig. 26. North Island. 



Class PELECYPODA. 



Earn. Unionidse. 



Genus XXIX. Unio, Philippson, 1788. 



173. U. menziesi, Gray, 1843. 



(II.), p. 160. North and South Islands, 

 (a.) Var. aucMandicus , Gray, 1843. 



(II.), p. 161. North and South Islands. 

 (h.) Var. xoaiharcnse, Colenso, 1845. 



(I.), vol. xiv., p. 169. North Island. 

 (c.) Var. lutulentus, Gould, 1851. 



(II.), p. 161. North and South Islands. 

 {d.) Var. hochstctteri, Dunker, 1862. 



(II.), p. 161. North and South Islands, 

 (c.) Var. rugatus, Hutton, 1883. 



(I.), vol. xvi., p. 216. North and South Islands. 



174. U. mutahilis, Lea, 1860 (? depressns, Lamarck, 1818; 

 depauperatus, Hutton, 1883). 



(I.), vol. xvi., p. 216. North Island. 



175. U. zclehori, Dunker, 1866. 

 (II.), p. 161. South Island. 



Fam. Cyrenidse. 

 Genus XXX. Sph^eiuji, Scopoli, 1777. 



176. S. novcdzelandicB, Deshayes, 1853 {lenticiila, Dunker, 

 1861). 



(II.), p. 154. North and South Islands. 



Genus XXXI. Pisidium, C. Pfeiffer, 1821. 



177. P. novcezclandicB, Prime, 1862. 



(II.), p. 155. North and South Islands. 



