ACHATINELLA 
Plate VI. 
Species 4. (Mus. Cuming.) 
Achatinella corneola. Achat, testa, oblongo-conicd, 
anfractibus septem ad octo, convexis, subtiliter concen- 
trice impresso-striatis, columella profunde arcuata, 
margine products, et contorts ; subpellucido-corned. 
The horny Achatinella. Shell oblong-conical, whorls 
seven to eight in number, convex, finely concentri- 
cally impressly striated, columella deeply arched, 
produced and twisted at the edge; subtransparent 
homy. 
Pfeiffer, Pro. Zool. Soc. 1845, p. 90. 
Hah. Sandwich Islands. 
Notwithstanding the marginal plait-structure of the 
columella, this and the two following species are very- 
distinct from the true Achatinellee. They belong rather 
to the small horny group of Acliatince, among which I 
have already described some allied forms. 
Species 5. (Mus. Cuming.) 
Achatinella clara. Achat, testa pyrxmidali-conicd, 
anfractibus octo, convexis, subangustis, concentrice im- 
presso-striatis, columella breviusculd, contorta, aper- 
turd parvd ; pellucido-corned, anfractuum margine 
juxta suturas rufilineato. 
The clear Achatinella. Shell pyramidally conical, 
whorls eight in number, convex, rather narrow, con- 
centrically impressly striated, columella rather short, 
twisted, aperture small ; transparent homy, edge of 
whorls next the sutures marked with a red line. 
Pfeiffer, Pro. Zool. Soc. 1845, p. 90. 
Achatinella striatula, Gould. 
Hab. Sandwich Islands. 
Distinguished from the preceding species by its nar- 
rower turreted form, and less prominent columellar plait. 
Species 41. (Mus. Cuming.) 
Achatinella pyramis. Achat, testa acuminalo-conicd, 
anfractibus octo, planiconvexis, superne tenuimargi- 
natis, oblique mimtS striatis, columella brevi, arcuata, 
aperturd parviusculd ; virescente-cornea. 
The pyramid Achatinella. Shell acuminately coni- 
cal, whorls eight in number, flatly convex, finely 
margined round the upper part, obliquely minutely 
striated, columella short, arched, aperture rather 
small; greenish horn. 
Pfeiffer, Pro. Zool. Soc. 1845, p. 90. 
Hab. ? 
Distinguished by its more acuminate conical form. 
Species 42. (Pig. a, b, Mus. Cuming.) 
Achatinella rebens. Achat, testa acuminato-oblongd, 
dextrorsd, solidiusculd, anfractibus septem, planicon- 
vexis, Icevigatis, vel oblique subirregulariter striatis, co- 
lumella plicato-contorta, aperturd parviusculd ; ru- 
bente-laclea, apice fused, epidermide fused fugaci in- 
duta, apertures fauce plerumque rosed. 
The ruddy Achatinella. Shell acuminately oblong, 
dextral, rather solid, whorls seven in number, flatly 
convex, smooth, or obliquely somewhat irregularly 
striated, columella plieately twisted, aperture rather 
small ; ruddy cream-colour, brown at the apex, 
covered with a brown fugacious epidermis, interior 
of the aperture mostly tinged with rose. 
Gould, Pro. Boston Soc. Nat. Hist. 1845, p. 27. 
Hab. Sandwich Islands. 
The shells here represented vary materially in form, 
but are doubtless different states of the same species. 
Species 43. (Mus. Cuming.) 
Achatinella perdix. Achat, testa ovatd, ventricosd, 
tenuicula, dextrorsd, spird exsertd, apice subobtusa, 
anfractibus sex, convexis, superne marginatis, lineis 
mpressis Jlexuosis oblique sculptd, columella plicato- 
contorta, subcallosd ; albidd, olivaceo-fusco undique 
picta et variegata, suturis el columella albis. 
The partridge Achatinella. Shell ovate, ventricose, 
rather thin, dextral, spire exserted, somewhat' obtuse 
at the apex, whorls six iu number, convex, margined 
round the upper part, obliquely sculptured with 
flexuous impressed lines, columella plieately twisted, 
rather callous ; whitish, painted and variegated 
throughout with olive-brown, sutures and columella 
white. 
Hab. ? 
This is a remarkable species, of a different type from 
May, 1850. 
