8 OLEACINID. 
within ; peristome simple, straight, margins approximating, right-margin 
arcuated in front, columellar margin not reflexed. 
Diam., greatest, ‘32; least, ‘28; height, -16. (Pfr.) 
Bay of Islands, New Zealand (Hochstetter.) Kaui, Sandwich 
Islands (Mighels.) 
P. coma, Gray; Dieff. Trav., vol. 1, p. 263; Helix coma, Pfr., 
MITTS VOL 2. Pin O95 VOL. 5s p> 156, Vo. 7o2. Recve, f. 7960:;" Voy. 
Erebus and Terror; Moll, pl. 1, f. 3. Shell umbilicated, depressed, 
rather thin, obliquely closely ribbed, slightly shining, pale fuscous, sub- 
radiated with brown spots ; spire a little elevated, flatly convex ; whorls, 
5, rather convex, slowly increasing, the last obscurely angled, not 
descending anteriorily ; umbilicus broad, conical; aperture diagonal, 
lunately-rotund ; peristome simple, straight, margins slightly convergent, 
upper part somewhat bent backwards. 
Diam:, greatest, -28 ; least, 24 ssheight, “12. (Pfir,) 
Auckland (Greenwood and Sinclair; ) Wellington and Lake Guyon 
(F.W.H.) 
Perhaps HY. diemenensis, Cox (A.LS., p. 20) is the same. Patula 
consimtlis (Pease) from the Society Island is also closely allied. 
P. tau, Pfeifer; Malak. Bl, viii., 1861, 148; M.A.V., vol. 5, p. 
159, Vo. 809. Shell broadly umbilicated, depressed, rather thin, above 
marked with somewhat apart rib-like plaits, rufous, tessellated with 
whitish ; spire slightly elevated, crown minute ; whorls 5, rather convex, 
slowly increasing, the last tapering, not descending, slightly striated 
beneath; aperture small, slightly oblique, lunar; peristome simple, 
straight, margins hardly converging, columellar margin not dilated. 
Diam., greatest, ‘12; least, 1; height, ‘oq. (Pfr.) 
New Zealand (Hochstetter.) 
Pi gamme,. Laer ;PZS., 1851; MH. Val. 3, p. 100; vor. 
5, Ps bos 2Ve. OOS) Are abuccnelia, wrecve, LG, 7. S21. shell 
umbilicated, depressed, thinnish, very closely striated with rib-like 
strie, diaphanous, pale horny, rufously clouded; spire very slightly 
convex ; suture impressed ; whorls 5, rather convex, slowly increasing, 
the last not descending, convex beneath ; umbilicus broadish, conical ; 
aperture sub-vertical, rotundly-lunar ; peristome simple; straight, margins 
converging, regularly arcuated. 
Diam. ;"12); height; os. (Pir) 
New Zealand (Strange. ) 
Queenstown, Dunedin, Preservation Inlet (F.W.H.) 
P.. egesta, Gray; P.Z.S:, 1840, 2.91665: Pj, ILA V.. aol. 3; 
p. 102; vol. 5, p. 164, Wo. 842; Reeve, lc. f. 798. Shell broadly 
umbilicated, depressly semi-globose, rather solid, regularly spirally- 
furrowed, and strengthened with strong longitudinal plaits, distantly 
placed, dilated into sub-triangular, membranaceous, deciduous lamelle, 
black-rufous ; spire short, convex, above depressed ; whorls 5%, convex, 
the last tapering, generally inclining downwards ; aperture small, a little 
epee lunately circular ; peristome simple, straight, margins closely 
united. 
