6 OLEACINID. 
This shell differs from its near ally, the 7 zofa, Pfr., by the turbinated 
spire, and by the almost closed-up perforation. 
Pe iota, Lyejers PZ.S., 185h; Mea. vol. 3, p: O05 7cer 
5, p. 114, Mo. 465; H. pilula Reeve, f- 809. Shell perforated, 
sub-depressed, thin, closely ribbed, not shining, yellowish horny, rufous 
spotted and reticulated; spire shortly-conoidal, somewhat acute ; whorls 
5, rather convex, gradually increasing, the last not decending, rounded ; 
aperture a little oblique, rotundly-lunar ; peristome simple, straight, 
margins distant, columellar margin arcuately ascending, sub-dilated 
above, open. 
Diam., greatest, :16; least, 14.5 height, "1. ~(Pir.) 
New Zealand. Queenstown (F.W.H.) 
P, dimorpha, Lejer; LZ. 1851; JL V., vol. 3, f. 685 
vol. 5, p. 114, No. 457; Reeve, Conch, lc. f- 775. Shell perforated, 
depressed, thin, very closely striated and somewhat closely so with 
thread-like ribs, a little shining, diaphanous, pale horny, minutely 
rufously-tessellated, and at the suture ornamented with rufous spots ; 
spire scarcely elevated ; whorls 5, rather convex, the last not descending, 
rounded, higher than broad; aperture sub-vertical, lunar; peristome 
simple, straight, with the basal margin somewhat bent backwards, 
columellar margin callously-reflected above, almost concealing the 
perforation, 
Diam greatest, +34; least;:3; height, 12. (fr) 
New Zealand (Strange. ) 
P. hy popolia, Leer LAS... 185. > Mee wok 3...) OS: 
vol. 5, p. 114, Wo. 459; Reeve, f. 787. Shell very narrowly um- 
bilicated, depressed, thin, very closely ribbed, silky, horny-cinereous ; 
spire little elevated, convex ; whorls 51%, slightly convex, the last not 
descending, more convex at the base ; aperture a little oblique, broadly 
lunar; peristome simple, straight, columellar margin arcuated, slightly 
reflexed above. 
Diam:,ereatest, 726. least, 24) sheight.-13. (fr) 
New Zealand (Strange.) 
Queenstown, Dunedin, Oamaru, Lake Guyon (F.W.H.) 
P. decidua, Pfeffer; P.Z.S. 1857, p 108; WAV, vol. 4, 
p. 71; vol. 5, p. 137, Wo. 606. Sheil umbilicated, depressly-turbinated, 
thin, sculptured with membranaceous, deciduous, fine ribs, horny- 
yellowish, obscurely and angularly streaked with reddish ; spire some- 
what regularly conoidal ; whorls 5, rather convex, slowly increasing, the 
last not descending, sub angulated at the periphery ; umbilicus narrow, 
pervious ; aperture oblique, lunately-rotund ; peristome simple, straight, 
margins converging, columellar margin slightly expanded. 
Diam., greatest, ‘14; least, 13; height, -o8. (Pfr.) 
New Zealand. 
P. celinde, Gray; P.Z.S., 1849, p. 164. Helix Celinde, Pfr., 
MTT AV 5 VOL. 3, Po G25 3 0k 5aap 202) VOMIT 22) eenen a OOU ms uell 
sub-perforated, rather depressed, membranaceously-plaited, pale brown ; 
spire canoidal, rather acute; whorls 5, firmly pressed together, the last 
sub-carinated, not descending, rather convex at the base, impressed in 
