38 CYCLOPHORID&. 
minute, trochiform, rather solid, brown, closely and uniformly spirally - 
striated, crossed by slight wrinkles; spire conical, nearly as high as 
broad, with the apex sub-acute; whorls 514, moderately convex, the 
last rounded and convex in front; aperture diagonal, nearly circular ; 
peristome simple, straight, thickened internally, with the margins approxi- 
mate, united by a thin callus. Operculum horny, of a few rapidly 
enlarging whorls. 
Height, o'08 ; breadth, o'r inch. (Pfr.) 
Auckland (Greenwood). 
Genus, PAXILLUS—Adams. 
Shell pupiform, rimate, smooth; spire accuminated ; aperture semi- 
ovate, ascending on the body whorl; inner lip adnate, spreading, flexuous, 
with a prominent tooth like fold in the middle; outer lip double, 
emarginate anteriorly ; umbilical region with a spiral elevated ridge 
ending in a notch at the fore part of the aperture. Operculum orbicular, 
of many gradually enlarging whorls; nucleus central. 
Borneo. 
P. peregrina, Gould; Pro. Bost. Soc., 1848; Ex. Ep., fig. 105 ; 
Pfr, M.H.V., vol.3, p. 583; vol. 6, p. 395, Wo. 11. Shell small, sinis- 
tral, elongated, sub-fusiform, solid, opaque, rufous-cinerous, hardly 
striated, perforated ; spire mamillated at the apex; whorls 8, flattened, 
sub-tabulated ; suture linear, deep ; aperture sub-quadrate ; peristome 
entire, equal, slightly reflexed. 
Length, 34; diam., 1-roth of an inch. (Pfr.) 
New Zealand. 
Genus, DIPLOMMANTINA—Benson. 
Tentacles long and filiform ; eyes sessile on their posterior part at 
the base. Foot short. Operculum thin, shelly ; whorls few, with thin 
prominent lamellae on their external edges. Shell thin, sub-ovate ; 
whorls convex, the last sub-ascendent ; aperture sub-circular ; inner lip 
with a spiral fold; peristome double ; outer lip expanded. 
India. Australia. 
D. chordata, Pfeiffer; P.Z.S., 1855, p. 105; M. Pn. V., Suppl. 1, 
p. 12; Suppl. 2, p. 11, Mo. 13. Shell sinistral, deeply rimated, sub- 
fusiform, thin, smooth, strengthened with somewhat distant cord-shaped 
ribs, diaphanous, waxy-whitish ; spire ovately-conical, apex acute ; 
whorls 7, convex, the last attenuated, ascending anteriorly ; aperture 
slightly oblique, sub-circular ; peristome double ; the inner one con- 
tinuous, shortly adnate, otherwise rather expanded; the outer one 
shortly spread out. 
Length, :16 ; diam. ‘o8 ; aperture, length, ‘06. (Pfr.) 
New Zealand (Strange.) Variety, Lord Howe’s Island (Mac- 
Gillivray.) 
