54 Macteay Menmoriat Vouume. 
Genus NATICA. 
Key to the species. 
1. Shell orbicular, umbilicus open. 
A funiculus, umbilicus rather wide ane ... LV. neozelanica. 
No funiculus, callus small a d ... LV. australis. 
. Shell orbicular, umbilicus closed by a ie 
Callus thin.. wo Pas be aap .. LV. levis. 
Callus thick, ic estes iorly wee . LV. gibbosa. 
3. Shell oval, solid, with a large callus (AZamma). 
Umbilicus not covered... ae as men NVouatn: 
NAatIcA NEOZELANICA, Quoy and Gaimard, Voy. Astrolabe, Zool. II. p. 237, pl. uxv1. 
figs, 11, 12. 
Locality.—Wanganui, Petane, Matapiro, Patea. 
Natica ausrratis, Hutton, Jour. de Conch, 1878, p. 23 (Lunazza). 
(Plate vu. fig. 38.) 
Shell globose and smooth. Whorls 33, the suture well marked but not 
excavated. Umbilicus narrow without any funiculus; a small posterior callus 
in the aperture. Length 7mm.; breadth 7mm. 
Locality.—Wanganui, Petane, Matapiro. 
Narica tavis, Hutton, Trans. N.Z. Inst. Vol. XVII. p. 317. 
(Plate vu. fig. 39.) 
Shell sub-globose, transverse, smooth, without any spiral markings. _Whorls 
4, the two first polished. Aperture broadly ovate, rounded in front; columella 
curved, the callus covering the umbilicus. Length 19mm.; breadth 23mm. 
Locahty.— Wanganui, Petane. 
Natica eipposa, Hutton, Trans. N.Z. Inst. Vol. XVIII. p. 334. 
Shell large, solid, smooth, gibbous, the spire almost buried ; the body whorl 
gibbous posteriorly. Aperture semicircular, the columellar callus very large, 
filling the posterior portion of the aperture, and eventually covering the whole 
umbilical region, Length 50mm.; breadth 50mm, 
Locality.—Matapiro. A single specimen only. 
