20 HELICID, 
margined ; whorls 5%, slightly convex, the last not descending, acutely 
keeled at the periphery, at the base a little more convex; umbilicus 
almost equalling one quarter of the diameter; aperture slightly oblique, 
angularly lunar; peristome simple, straight, columellar margin slightly 
expanded. 
Diam-gereatest, 21; least; -2; height, 125 (Pfr) 
New Zealand. 
c. Imperforate. 
Heirradiata, Gould; “CS. Ex. Ape us pf: 34,77. 35. Pes 
MMTV TTI DP N20, SC V., 1p 51. (Cox, Aust, Land “SHS, po 26. | nell 
imperforate, conically-globose, thin, whitish, above radiately tessellated 
with purple, and striated with closely set acute lines of growth, below 
rounded ; whorls 6, convex, the last somewhat angular ; aperture trans- 
verse, lunate; peristome acute, incurved towards the columella, and 
scarcely reflexed. 
Diam:, -25 ; height, °37 inch, 
The above description is taken from Gould. Pfeiffer states that it 
neither agrees with the figure, nor with the dimensions (Cox.) 
Gould appears to have given both Australia and the Bay of Islands 
as the habitat in different publications. It has not been recognised 
since. 
Sub-Genus— 
Like Thalassia, but without keel. Turbinate. 
H. kivi, Gray; Dieff. Trav., vol. 3, p. 262; Helix Kivi, Pfr., 
METTAV GS COLT GProug2i: WoL, 5, p. 3232. WVo: \T30AG) Reeiex 7. 7One 
Voy. Erebus and Terror, Moll. Fl, 1 f. 1. Shell imperforated, 
turbinated, white, thin, obliquely closely striated, adorned with short, 
irregular, oblique, purple-brown streaks ; spire sub-conical, obtuse ; 
whorls 6, flattish, the last rounded, convex at the base, white, smooth ; 
aperture broad, lunar; peristome simple, straight, columellar margin 
somewhat reflexed. 
Diam., greatest, ‘4; least, °36; height, -32. (Pfr.) 
Auckland (Major Greenwood. ) 
HH. sranum, Leijers P.ZS. 1854, p..107 3) ALLL, sola. 
20; vol. 5, p. 63, Wo. 143. Shell perforated, turbinately-globose, thin, 
very closely and finely striately-ribbed, pale horny, irregularly variegated 
with reddish markings; spire conoidal, slightly acute; whorls 5%, 
convex, the last not descending, rather swollen near the aperture; 
aperture slightly oblique, broadly lunar; peristome simple, straight, 
margins sub-converging, columellar margin slightly patulous. 
Diam., greatest, ‘16; least, ‘14; height, ‘12. (Pfr.) 
New Zealand. 
Wellington (F.W.H.) 
H. guttula, Pfeiffer; Zeit. f Malak., 1853, ~. 53; ICELV.,, vol. 
3,7: 620; vol. &, p. 55, Vo. 7a3 Reeve, Conch, Jc.,-f. 1040; shell 
imperforate, convexly-depressed, thin, very smooth, shining, pellucid, 
