22 
Long, 2°, of an inch; wide, 14; of an inch. 
Hab. West Indies. 
Cab. British Museum, Metcalfe, Gaskoin, &c. 
Differs from the Voluta catenata of Montagu* (Marginella of 
others) in having but four distinct, and one rather obscure, bands; in 
these being uninterrupted, and the linear markings floating in their 
centres, and not linking interrupted or disjointed portions of the bands, 
as in M. catenata; in the dark colour, and the more oviform shape. 
I have hitherto found this species among parcels of Marginella sagit- 
tata of Hinds. 
CypRXA CRIBELLUM. Cyp. testd subcylindricd, levi, albd, bruneo 
omnino obtectd, preter maculis numerosis, testd concoloribus, 
Sere cireularibus, inequalibus et irregulariter dispensatis ; mar- 
ginibus bruneo-rufescente punctatis ; basi subplanulatd, albd ; 
aperturd latd, precipue antice ; columelld ventricosiusculd ; den- 
tibus labii prominentibus, equalibus, circa quindecim ; dentibus 
columellaribus subobsoletis (preter dente primo) circa duodecim; 
dente primo majus prominente deinde anticé est incisura pro- 
funda; sulco columellari nullo, extremitatibus anticis leviter 
productis, externé valde convergente ; canali lato et profundo ; 
extremitatibus posticis obtusis ; canali postico lato, aperturd 
recté continuo ; margine externo incrassato ; spird late umbili- 
cata. 
Shell subcylindrical, smooth, white, covered by a dark-brown coat- 
ing except at numerous nearly circular white spots, of unequal sizes 
and irregular distribution, thus leaving at those spots the colour of the 
shell to view; the line of meeting of the two mantles of the mollusc 
on the dorsum is generally perceptible ; internally of a brown colour ; 
outer edge of the margin more or less dotted with rather large dark 
reddish-brown dots, similar dottings, but less in degree, on the colu- 
miellar side of the base ; base rather flat, white (white deposit, on the 
centre of the columellar side, semitransparent); aperture wide, espe- 
cially anteriorly, inner edge of the lip spiral; columella slightly ven- 
tricose ; teeth on the lip prominent, even, extending partly on to the 
base, about fifteen in number, those on the columella very slightly 
prominent (excepting the first), not extending on the base,—about 
twelve in number ; the first greatly projects, between which and the 
inner anterior extremity is a deep notch,—no columellar groove,—and 
at the posterior half of the aperture the teeth exist along the outer, 
those on the inner edge being mere indications of teeth ; extremities, 
anterior very slightly produced, the outer one converging greatly ; 
posterior extremities obtuse, very slightly produced; channels, ante- 
rior wide and deep, posterior rather wide and in a straight line with 
the aperture; margin, only on the outer side, incrassated; spire 
widely umbilicated. 
Long, 14 of an inch; wide, .% of an inch. 
* Which I believe to be a West Indian production only, and not.as Montagu 
was led to suppose, a British species. I have found the Marginella catenata fre- 
quently among the small West Indian Marginellz, as have many others, and from 
no other source did Montagu himself obtain it. 
