72 NATICID&. 
umbilicus ; very finely transversely striate ; inner lip callous ; operculum 
shelly ; yellowish or reddish brown, with about six interrupted spiral 
chestnut brown bands; the spots generally lunate ; interior pale brown ; 
columella, mouth, and interior portion of body whorl, white. 
Length, 1°1 ; breadth, ros. 
Omaha to Stewart Island; common in the north, rare in the south. 
Chatham Islands. 
Genus, LUNATIA—Lamark. 
Animal entirely retractile within the shell. Operculum simple, car- 
tilaginous. Shell sub-globose ; spire rather elevated ; inner lip thin, or 
with a moderate callus ; umbilicus wide, pervious, not funiculate. 
L. australis, Hutton; Jour. de Conch., 1878, ~. 23. Globose, 
smooth, whorls 34 ; suture well marked, but not excavated ; umbilicus 
rather narrow, without any groove; inner lip with a callus; brown or 
grey. 
Length, -3; breadth, ‘3. 
Auckland. 
I have not seen the operculum. 
L. vitrea, Hutton, CMM. p. 21. Shell polished, smooth, white ; 
perforated, pillar not visible in the umbilicus ; operculum horny. 
Length, 35 ; breadth, °34. 
Stewart Island and Chatham Islands. 
FAMILY—PYRAMIDELLID. 
Teeth rudimentary. Tentacles broad, folded, ear-shaped, connate at 
their base, bearing the eyes immersed at their inner sides; mantle en- 
closed, with a rudimentary siphonal fold ; foot produced and truncate 
anteriorly, with a fold or mentum in front; operculum horny, sub- 
spiral, with the columella margin sinuated. Shell turreted ; aperture 
entire, or not produced into a canal in front; columella plaited. 
Marine. 
Genus, OBELISCUS—Humphrey. 
Turreted, smooth ; aperture semi-oval, entire, rounded anteriorly ; 
columella straight, with more or less numerous folds. 
O. roseus, Hutton, CAZM., p. 22. Whorls flattened, smooth ; 
white or pinkish, spirally banded with dark-pink. 
Length, ‘2 ; breadth, ‘1. 
Stewart Island. 
Genus, CHEMNITZIA—D’Orbigny. 
Shell slender, elongated ; whorls plaited; apex sinistral; aperture 
simple, ovate ; peristome incomplete. 
C. zealandica, Hutton, CMM, p. 22. Turreted; whorls 
transversely plaited, smooth ; white. 
