,s| "TERRA NOVA" EXPEDITION. 



his words " nacree, tres-lisse " and "nacre brillant" probably are merely descriptive of 

 a highlv glossy and perhaps slightly iridescent surface. 



It is of course possible that a mistake has occurred, and that the specimens he 

 described came, not from New Zealand, but were obtained elsewhere during the same 



voyage. 



The South Australian shells which have been called Calyptrcea xeiitinn by Uatliff 

 and Gabriel are separable from the New Zealand species, since they have not the 

 hollow axis of that form. They appear more depressed and spread out, and they do 

 not exhibit the finely tuberculous or pustulose external sculpture of the true N. ti'ntiix. 



The septum also in the Australian shell is curved outward, whereas in the New 

 Zealand form it is incurved. 



Gray's inadequately described types were from New Zealand, and are in the 

 British Museum collection. 



Since Mr. Hedley was the first to call attention to the difference in the axis of 

 these two forms I have associated his name with the Australian shell. 



13. X/i/iipnfi'l/ii /i>'d I i'i/i, n. sp. PI. I, figs. 23-25. 



Galerus pellncidng : Angas, Proc. Zool. Soc., 1867, p. 211. 



CnJyptrnea pdhic'ula : Tate, Trans. R. Soc. S. Aust., vol. XVII, p. 199 (1893) ; Tate and May, 



Proc. Linn. Soc. N.S.W., vol. XXVI, p. 376 (1901). 



Cnhjptrsea scutum: Gatliff and Gabriel, Proc. R. Soc. Victoria, vol. XXII, p. 38 (1909). 

 Crtlyptrsea tennis: Hedley, Proc. Linn. Soc. N.S.W., vol. XXXVIII, p. 289 (1913). 

 Calyptraea calyptrseformis, partim : Watson, " Challenger " Gasteropoda, p. 460. 



The Triir/tifit pellucida of Reeve confused with this species is a true Calyptrcea, 

 having the same kind of septum as 1 '. i-liim //*/*, the type of the genus. 



A single specimen from off East Moucoeur Island, Bass Strait, named by Watson 

 ('. calyptra'farinix, belongs to the present species. 



14. ( 'haronia* sp. juv. 



Station 134, near North Cape, New Zealand : 1 1-20 fathoms. 



A single young specimen of a "Triton" in perfect condition, allied to the early 

 stage of the well-known ( '. fritait/N (Linn.). It consists of six and a half whorls, of which 

 the first four and a half form the protoconch. These are brownish, corneous, smooth, 

 convex. The last two volutions are rosaceous, less convex, with spiral series of small 

 pustules and spiral stripe between them. There are five rows of nodules on the 

 penultimate whorl and eight or nine on the last, which has an oblique curved 

 rounded varix on the left side and a similar one outside the labrum, which is thickened 

 within with a fine whitish riblet bearing twelve very small nodules. The columella is 



* See Iredale, Nautilus, vol. XXVI I, p. .V> ( |'.H:i). 



