Zoological Society. 61 
larger; and there is a thick keel surrounding the umbilicus; the 
suture is distinct and smooth, but belted posteriorly by the middle 
keel ; the aperture is large, nearly circular, slightly acuminated poste- 
riorly, with a rather broad reflected peritreme, in which are three 
little cuts answering to the ends of the external keels ; the umbilicus 
is large and deep, spirally striated within; the outer striee being the 
larger. 
From Madagascar, in the collections of A. L. Gubba, Esq., Havre, 
and Mr. Cuming. 
2. CycLostoma APLusTRE. Cycl. testd suborbiculari, tenuius- 
culd, levi, albicante, fasciis nonnullis posticis, angustis, castaneis, 
subinterruptis, striisque tenuissimis spiralibus, ornatd ; spird le- 
vatiusculd, subacuminatd, apice obtuso; anfractibus quinis rotun- 
datis, creberrimé transversim striatis, striis posticis fortioribus, 
anticis feré obsoletis ; umbilico magno, intus spiraliter striato, 
striis tenuissimis; aperturd feré circulari, postice paululim 
acuminatd, peritremate tenui, acuto, supra umbilicum paululim 
reflexo. 
A species somewhat resembling C. ligatum, but differing in several 
characters. It is suborbicular and thin, smooth, whitish, posteriorly 
with several narrow slightly interrupted chestnut-coloured bands and 
close-set very slender spiral striz ; the spire is rather elevated and 
acuminated, but the apex is obtuse: volutions five, very regularly 
rounded, and very finely transversely striated, the transverse strize 
decussating the spiral strize, and the posterior strize being the most 
distinct, the anterior being almost undistinguishable: the umbilicus 
is large, very finely spirally striated within; aperture large, nearly 
circular, slightly acuminated posteriorly, with a thin, sharp-edged 
peritreme which is rather wide and slightly reflected over a part of 
the umbilicus. 
From Madagascar, in the collection of A. L. Gubba, Esq., Havre. 
3. DESCRIPTION OF A NEW SPECIES OF Buxtimus. By Lovet. 
Reeve, F.L.S. 
Buuimus 1rroratus. Bul. testd acuminato-oblongd, medio ven- 
tricosd, anfractibus sex, subrotundatis, striis tumidis elevatis 
interruptis oblique exsculptis, infra suturas peculiariter con- 
centrice crenulatis, columellé stricté uniplicatd; rufescente- 
purpured, epidermide tenui cinerascente, fulvo hic illic punctatd, 
indutd, columelld cerulescente-albd, labro incarnato-roseo. 
Hab. ? 
This beautiful species, received by Mr. Cuning from A. L. Gubba, 
Esq. of Havre, is materially distinct from any hitherto described. It is 
of a swollen ovate form with the spire rather sharply acuminated, and 
the columella is distinguished by a sharp winding plate. The ground 
colour of the shell is a reddish purple, the last whorl beimg particu- 
larly characterized by a thin ash-coloured epidermis sprinkled with 
light fulvous spots all inclining towards the lip, which is of a delicate 
flesh-pink. 
