145 
mis valde ventricosis; apertura ovata; labro simplici, interne 
leviter incrassato ; columella brevi, in callum abrupte terminante ; 
sutura leviter impressa; coloré luteo vel castaneo, unicolori vel 
cum fascia suturali nigra, rare duabus vel pluribus anfr. 2 ulti- 
mis impositis ; columella albida vel subfusca. 
Long. ~; lat. 5 poll. 
20? 20 
Hab. Waialua, Oahu. 
Shell conical, sinistral, polished; whorls 5, rounded, margined 
above, the last very ventricose ; aperture ovate; lip simple, slightly 
thickened within ; columella short, with an abrupt callous termina- 
tion ; suture but slightly impressed ; colour yellow or chestnut, plain 
or with a black sutural band, rarely with two or more on the last two 
whorls ; columella white or light brown. 
The rounded whorls and obese appearance of this shell are strikingly 
characteristic. It is a rare species and extremely limited in its range. 
44, AcHATINELLA Fusca (Pl. XXIII. fig. 44). A. testa tenui, 
cylindrico-elongata; anfractibus 5, fere planis; sutura lineart, sub- 
impressa ; apertura ovata; striis longitudinalibus bene expressis ; 
colore fusco; sutura infra marginem inferiorem fasciola coloris 
cornet circumeincta; anfr. ultimi dimidio inferiori corneo. 
Long. a5 lat. a poll. 
Hab. Manoa, Oahu. 
Shell thin, cylindrically elongate; whorls 5, nearly flat ; suture 
linear, slightly impressed ; aperture ovate ; lip acute ; columella den- 
tated within ; longitudinal striz strongly developed ; colour brown, 
with a narrow horn-coloured band revolving below each suture ; lower 
half of the last whorl horn-coloured. 
This small species is not arboreal in its habits, and is found among 
the decaying leaves of the Tutui, near the base of the mountain at the 
head of Manoa valley. 
45. AcwaTiInetia RECTA (Pl. XXIII. fig.45). A. testa plerumque 
dextrorsa, solida, pyramidali ; anfractibus 6, subrotundis, superne 
marginatis ; sutura leviter impressa; apertura subovata; labro 
simplici, interne incrassato ; columella brevi, torta et cum labro 
interiori coalescente ; colore vario, plerumque flavo, unicolori vel 
vitiis 2 nigris in anfr. ultimo ornato, quarum una in apertura de- 
currente, altera suturam appropinquante. 
Long. x3 lat. Z poll. 
Hab. Waialua, Oahu. 
Shell usually dextral, solid, pyramidal; whorls 6, but slightly 
rounded, margined above ; suture slightly impressed ; aperture sub- 
ovate; lip simple, thickened within; columella short, twisting to 
unite with the inner lip; colour various, usually yellow, plain, or 
with two black bands on the last whorl, one of which is lost in the 
aperture, the other becomes sutural. ? 
The shell above described is peculiar for its solidity and rigid 
aspect. It possesses none of the graceful curves which give to this 
No. CCLVII.—Proceepin6s or THE ZOOLOGICAL SOCIETY. 
