ACHATINELLA.— Plate VI. 
any other of the genus, compounded of Bulimus and 
Achatinella. With the generic callous twisted-plait co- 
lumella of the latter genus, the shell is characterized by 
the form, substance, and design of colouring of the former. 
Species 44. (Mus. Cuming.) 
Aohatin f.li.a I'j.i cat a. Achat, testa acuminato-turrita, 
graciti, tenuiculd, sinistrorsa, anfractibus sex, convexis, 
carinis spiralibus numerosis acutis undiqiie sculpt is, 
suturis subexcavatis, columella, callosa, plica obsoletd, 
aperturd pared, labro simplici; fuscescente-albd, ad 
apicem obscure fulguratd. 
The plicate Achatinella. Shell acuminately turreted, 
slender, rather thin, sinistral, whorls six in number, 
convex, sculptured throughout with numerous sharp 
spiral keels, sutures rather excavated, columella cal- 
lous, plait obsolete, aperture small, lip simple ; 
brownish-white, obscurely waved at the apex. 
Miguels, MS. Pfeiffer, Mon. Helic. viv. vol. ii. p. 235. 
Hah. Moko Kai, Sandwich Islands. 
This also is of a different type from any of the pre- 
ceding species, and one of very abnormal character. It is 
the only form that presents any external raised sculpture, 
and the plicate columella by which the genus is chiefly 
characterized is almost obsolete. 
Species 45. (Mus. Cuming.) 
Achatinella bacca. Achat, testa abbreviaio-conicd, 
dextrorsd , subventricosd, anfractibus convexis, supeme 
marginalia, columella plicato-contorta ; intense nigri- 
cante-castaned, suturis flavidis, columella pallide ro- 
sacea. 
The berry Achatinella. Shell abbreviately conical, 
dextral, rather ventricose, whorls convex, margined 
round the upper part, columella plicatelv twisted; 
very dark chestnut, sutures yellowish, columella 
pinkish. 
Hob. ? 
The shell here described does not appear to have 
reached maturity, but, allowing for this, it is still charac- 
terized by a much wider and shorter plan of convolution 
than any of the species which have preceded it. 
