Hurron.—On Rhachiglossate Mollusca. 228 
The dentition and operculum are figured in the Trans. N.Z. Institute, 
xv., pl. 18, f. o. Quoy has also figured the operculum, and Troschel the 
dentition, in Das Gebiss der Schnecken, ii., taf. xiii., f. 20. 
Fam. Olivide. 
Animal with a voluminous foot, the lobes usually reflected over the sides 
of the shell; eyes none, or on the sides of the tentacles. Operculum small 
or absent. Shell porcellanous, without epidermis ; columella, suture, and 
spire more or less callous; aperture obliquely notched below ; outer lip 
simple.* 
Sub-fam. Ancilline. 
Eyes none. Shell polished, the columella grooved and twisted in front. 
Operculum small, ovate. 
Genus Ancillaria, Lamarck. 
Shell oblong or sub-cylindrical, thick; columella with a few anterior 
oblique plaits. 
ANGILLARIA AUSTRALIS, Sowerby, Sp. Conch., 1880, pl. 7, f. 44-46; 
A. australis and A. albisulcata, Quoy and Gaimard, Voy. Astrolabe, Zool. iii., 
p. 19, 20, pl. 49, f. 5-17 (1834); Gray, Figs. Moll. Anim., i., pl. 19, f. 1, 2, 
8, and 5 [not A. albisulcata, Sowb.]. A. pyramidalis, Reeve, Conch. Icon., 
f. 11 (1864); A. australis, Tryon, Man. Conch., v., p. 94, pl. 88, f. 28, 29. 
Hab. Auckland to Cook Straits; Chalky Inlet. 
The dentition is figured in the Trans. N.Z, Institute, xv., pl. xiii., f. v. 
Fam. Columbellide. 
Animal with the foot produced anteriorly ; the eyes near the outer bases 
of the tentacles. Shell small, ovate or oblong, anteriorly notched or pro- 
duced into a short open canal; inner lip tubercled, outer lip incurved in 
the middle and usually thickened. Central tooth a simple plate, the laterals 
notched at the outer end.t 
Genus Columbella, Lamarck. 
Shell with the inner lip usually excavated in the middle and ciatiüdatod 
or denticulated in front; outer lip inflected and crenulated in the middle. 
Sub-genus Mitrella, Risso. 
Shell mitriform, smooth, spire elevated ; columella smooth or with a 
few anterior rugosities ; outer lip smooth or crenulated within. 
COLUMELLA cHoava, Reeve, Conch. Iconica, f. 239 (1858) ; Tryon, Man. 
Conch., v., p. 187, pl. 51, f. 51. Pyrene flexuosa, Hutton, Jour. de Conch., 
1878, p. 23. 
* The following species are omitted as not really inhabiting New Zealand = 
Uliva duclosi, Reeve. Inhabits Australia and Po, lynesia 
Oliva erythrostroma, Lam. Inhabits Indo-Pacific Province 
Ancillaria nove-zealandie, Sowb. Inhabits China and Autalia 
t The following species is omitted as not really inhabiting New «al — 
Columbella zebra, Gray. Inhabits Japan and Polynesi 
