BULIMUS ANTIPODUM. Tab. 1, fig. b. 

 Bulimus antipodum, G-ray, Dieffenbach's N. Z. II., p. 2-47. 

 Hab. Kaitaia, N. Z. (Dieffenbach). 

 This species is here figured for tlie first time. 



* Bulimus pacificus. Tab. A, fig. 6. 

 Buliinns pacificus, Pfeiffer, Froc. Zool. Soc. 1846,^. 31 ; 

 Mon. Hd. II., 2). 309. 



Hab. N. W. Australia, Pigeon Is. {Dr. Richardson). 



Pupa Strangei. Tab. i, fig. S. 

 Pupa Strangei, Pfeiffer, Mon. Hd. III., p. 560. 

 Hab. " Sydney." 



The above figure does not represent the armature of the 

 aperture quite accurately. 



Vvyx,sp.n.? Tab. i, fig. 7. 



Hab. Australia. 



Tills figure appears to represent an undescriljed species 

 of Pupa ; but during the lapse of time, since the plate was 

 executed, the specimen has been unfortunately crushed 

 and cannot therefore be now characterized. 



B. Freshwater Mollusca. 



Family PaludiniD/E. 



* Paludina australis. Tab. i,fig. 19. 



Paludina australis, Eeeve, Conch. Icon. XIV., f. 71. 

 Hab. Australia. The shell here represented is immature. 



Hydrobia antipodum. Tab. I, fig. 19. 

 ola antipodanum, Graij, Dieffenbach's N. 



Hab. New Zealand {Dr. Sinclair). Type figured. 



Aninicola antipodanum, Grajj, Dieffenbach's N. Z. II., p. 



Hydrobia Zelandi^. Tab. I, fig. below 19. 

 Amnicola ? Zelandife, Gray, Dieffenbach's N. Z. II., p. 



Hab. New Zealand {Dr. Sianger). Type figured. 



Family Melaniid-ii;. 



* Melania Australis. Tab. 4, fig. 3. 



]\Ielania Australis, Peeve, Conch. Icon. XII., /. 82. 

 Hab. Victoria Ptiver {Richardson). 



Melanopsis trifasciata. pi. I, figs. 22, 18. 



Melauopsis trifasciata, Gray, Dieffenbach's N. Z. II., p. 

 263. 



M. Zdandica, Gould 1848 ; M. Strangei, Reeve 1860 ; 

 M. Grata, Dunker 1861. 



Hab. Waitanga Falls, Bay of Islands, N. Zealand. 



The actual type is represented by fig. 22, fig. 18 repre- 

 senting a very large old specimen with the spire decollated 

 as frequently is the case in this species. 



Family Unionid.e. 



* Unio M(_)Ketoxicus. Tab. 4:, fig. 2. 



Unio moretonicus, Reeve, Conch. Icon. XVI., /. 118. 



U. Australis, Lamarck ? Anim. s. Vert. ed. 2, VI., p. 546. 



Hab. Australia (Membridge Kiver). {Richardson). 



Mycetopus rugatus. Tab. 4, fig. 1. 



Jlycetopus rugatus, Soiverby, Conch. Icon. XVII., / 7. 



Hab. Victoria River, N. Australia. 



Possibly when the animal inhabiting this sliell is 

 examined it will prove to be an Anodonta. The shell 

 scarcely gapes at the anterior extremity. 



C. Marine Mollusca. 



Family Cerithiid/E. 



Cerithidea bigarixata. Tab. I, fig. 20. 



Cerithium bicarinata. Gray, Dieffenbach's N. Z. II., p. 241. 

 Hab. New Zealand {Dr. Stanger). Type figured. 



Family Trichotropid.e. 



Trichotropis clathrata {A. Adams Ms.) Ted). I, fig. 21. 



Hab. New Zealand {Dr. Sinclair, Colonel Polton, and Dr. 

 Lyall, R.N.) 



The above name is attached to a specimen in the 

 Cumingian collection, without any locality, which agrees in 

 every particular with specimens from New Zealand col- 

 lected by the gentleman quoted above. The name occurs 

 in Messrs. Adams' list in the " Genera of recent Mollusca " 

 vol. I., p. 280 ; but as I cannot find a description of any 

 species so designated, I append the following : — - 



Shell shortly fusiform, turreted, very narrowly umbili- 

 cated, of a pale pinkish, or dirty white colour; whorls six, two 

 first convex, smooth, shining, the rest convex, but slightly 

 angulated near the middle, ornamented with a fine can- 

 cellation formed by rather oblique longitudinal fine ribs 

 (about twenty in a whorl) being cut across by spiral 

 lirations (six in the upper whorls, and about twelve in the 

 last) the fourth from the top being a little larger than the 

 rest, and producing the faint angulation near the middle of 

 the whorls ; aperture subcircular, obliquely but shallo\\'ly 

 channelled at tlie base, occupying about half the length of 

 the entire shell ; labrum very slightly exjiaiided ; columella 

 arcuate above, angulated just below the middle by an 

 acute projection and oljlique interiorly, covered by a thin 



