814 Transactions. —Geology. 
Oliva neozelanica. Pl. xviii., fig 1. 
Shell oblong, the spire acuminate, of 4-5 whorls, each of which has an 
anterior callous band covering nearly half the whorl: suture excavated. 
Aperture narrow, the columella twisted and with four or five spiral grooves 
anteriorly. 
Length, 1:5 inch ; breadth, -63 inch. 
Locality. Patea. 
Perhaps the same as O. australis, Duclos. 
Columbella varians. Pl. xviii., fig. 2. 
Shell oblong, the spire prominent and acute. Whorls 7, flattened, 
spirally grooved. Grooves variable, sometimes only one on the anterior 
half of the whorl, sometimes several are equally distributed all over; 
generally there is a smooth band without grooves on each whorl; some- 
limes the spire whorls are quite smooth or with one or two grooves only. 
Suture deep. Aperture less than half the length of the shell, oval with the 
right lip flattened ; the posterior canal well marked ; columella smooth and 
rounded; the anterior canal very short; right lip toothed within. 
Length, :87 inch; breadth, :15 inch. Length of aperture, 14 inch. 
Locality. Wanganui and Petane. | 
A variety occurs at Wanganui in which the whorls are longitudinally 
plicated. 
Columbella pisaniopsis. 
Shell fusiform, the spire produced aud sharp. Whorls 7; the two first 
embryonic, smooth, polished ; the others rounded, rather gibbous behind, 
and with rather close spiral ribs. Spire whorls and posterior portion of the 
body whorl with regular, but not strong, longitudinal plications. There are 
eighteen or twenty longitudinal plicæ on a whorl. The penultimate whorl 
has 7 or 8 spiral ribs, the body whorl has from 16 to 20. Suture well 
marked. Aperture narrow, roundly angled behind; the right lip sharp, 
toothed inside ; the columella smooth. 
Length, -88 inch ; breadth, 17 inch. Length of aperture, 15 inch. 
Locality. Petane. 
Columbella cancellaria. 
Shell fusiform, the spire produced and sharp. Whorls 6 or 7, the first 
two embryonie, polished; the others slightly rounded and with strong 
spiral ribs crossed by longitudinal ribs which are not so strong as the spiral 
ones, dividing the surface into squares. There are 5 spiral ribs on the 
penultimate whorl, and about 15 on the body whorl; the grooves are 
rather broader than the ribs, and are longitudinally striated. The longi- 
tudinal ribs die away anteriorly on the body whorl. Suture well marked. 
Aperture narrow ; the outer lip sharp, but thickened and toothed inside ; 
the columella smooth. 
