XVI 
HELIX (CHAROPA) ALPHA, Pfeiffer. 
Helix alpha, Pfr., P.Z.S., 1851; M.H.Y., vol. 3, p. 112; vol. 5, p. 183, 
No. 981. Helix slijmlata, Reeve. 
Shell umbilicated, conical, keeled, obliquely finely striated and distantly 
lamellarly-ribbed, variegated with biown and yellow streaks; spire 
rather convexly-conical, apex rather obtuse ; whorls 51, slightly convex, 
the last not descending, acutely denticulately keeled, flat at the base, 
sub-angulated at the moderate, pervious umbilicus; aperture diagonal, 
somewhat hatchet-shaped ; peristome simple, straight, upper margin, 
short, basal margin arcuated, sub-vertically ascending towards the 
columella. 
Diam., greatest, 4J; least, 4, height, 3 mill. 
Hab., New Zealand (Strange). 
HELIX (CHAROPA) BETA, Pfeiffer. 
Helix beta, Pfr., P.Z.S., 1854; M.H.V., vol. 3, p. 112; vol. 5, p. 183, 
No. 982. 
SnELL umbilicated, trochiforraed, keeled, thin, arcuately strongly plaited, 
fulvous, broadly spotted with chestnut; spire elevated, con vexly-conical, 
rather acute; suture margined; whorls 7, narrow, flattish, the last 
somewhat receding, not descending, ciliated towards the keel, slightly 
convex at the base ; umbilicus narrow ; aperture oblique, angularly- 
lunar; peristome simple, straight, basal margin regularly arcuated. 
Diam., greatest, 3,} ; height, 3J. 
Hab., New Zealand (Strange). 
HELIX (THALASSIA) CELINDE, Gray. 
Nanina Celinde, Gray, P.Z.S., 1849, p. 164. Helix Celinde, Pfr., 
M.H.V., vol. 3, p. 125 ; vol. 5, p. 202, No. 1132. 
Shell sub-perforated, rather depressed, membranaceously-plaited, pale 
brown; spire conoidal, rather acute; whorls 5, firmly pressed together, 
the last sub-carinated, not descending, rather convex at the base, 
impressed in the middle; aperture oblique, sub-triangularlv lunar; 
peristome sub-labiated, margins remote, joined to a small callus, some¬ 
what straight, basal margin somewhat straitened. 
Diam., greatest, 4; least, 3| ; height, 2?,- mill. 
Hab., New Zealand. 
HELIX (LAOMA) LEIMONIAS, Gray. 
Bulimus Leimonias, Gray, P.Z.S., 1849, p. 167. Helix Leimonias, 
Pfr., M.H.V., vol. 3, p. 144 ; vol. 5, p. 221, No. 1321. 
Shell sub-imperforated, turretedly-conical, rather solid, smooth, shining, 
pellucid, pale horny, reddish spotted; spire turreted, rather acute ; 
whorls 7, flat, the last acutely keeled, flat beneath; aperture sub-vertical, 
depressly quadrangular, crowded with three strong white lamellae, one 
