Hutton. — On Ehachiglossate Mollusca. 223 



The dentition and operculum are figured in the Trans. N.Z. Institute, 

 xv., pi. 13, f. o. Quoy has also figured the operculum, and Troschel the 

 dentition, in Das Gebiss der Schnecken, ii., taf. xiii., f. 20. 



Fain. OlividcB. 



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. SheU porcellanous, without epidermis ; columella, suture, and 

 spire more or less callous ; aperture obliquely notched below ; outer lip 

 simple.* 



Sub-fam. Ancillina. 



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. 



Axcillaria australis, Sowerby, Sp. Conch., 1830, pi. 7, f. 44-46 ; 

 A. australis and A. albisulcata, Quoy and Gfahnard, Voy. Astrolabe, Zool. hi., 

 p. 19, 20, pi. 49, f. 5-17 (1834) ; Gray, Figs. Moll. A mm., i., pi. 19, f. 1, 2, 

 3, and 5 [not A. albisulcata, Sowb.] . A. pyramidalis, Eeeve, Conch. Icon., 

 f. 11 (1864) ; A. australis, Tryon, Man. Conch., v., p. 94, pi. 38, f. 28, 29. 



Hab. Auckland to Cook Straits ; Chalky Inlet. 



The dentition is figured in the Trans. N.Z, Institute, xv., pi. xiii., f. v. 

 Fam. ColumbellidcB. 



Animal with the foot produced anteriorly ; the eyes near the outer bases 

 of the tentacles. SheU smaU, 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.f 



Genus Columbella, Lamarck. 



Shell with the inner hp usually excavated in the middle and crenulated 

 or denticulated in front ; outer hp inflected and crenulated in the middle. 

 Sub-genus Mitrella, Eisso. 



Shell mitriform, smooth, spire elevated ; columella smooth or with a 

 few anterior rugosities ; outer hp smooth or crenulated within. 



Columella choava, Eeeve, Conch. Iconica, f. 239 (1858) ; Tryon, Man. 

 Conch., v., p. 137, pi. 51, f. 51. Pyrene jiexuosa, Hutton, Jour, de Conch., 

 1878, p. 23. 



* The following species are omitted as not really inhabiting New Zealand : — 

 Oliva duclosi, Eeeve. Inhabits Australia and Polynesia. 

 Oliva erythrostroma, Lam. Inhabits Indo-Pacific Province. 

 Ancillaria nov<s-zealandi<e, Sowb. Inhabits China and Australia. 



t The following species is omitted as not really inhabiting New Zealand : — ■ 

 Columbella zebra, Gray. Inhabits Japan and Polynesia, 



