22 



Long, -^^ of an inch ; wide, -^^ of an inch. 



Hab. West Indies. 



Cab. British Museum, Metcalfe, Gaskoin, &c. 



Differs from the Voluta catenata of Montagu* {Mnrginella of 

 others) in having but four distinct, and one rather obscure, bands ; in 

 these being uninterrupted, and the Unear markings floating in their 

 centres, and not hnking 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 sayit- 

 tata of Hinds. 



CvpRiEA CRiBELLUM. Cyp. testd suhcylindricd, Icevi, albd, bruneo 

 omnino obtectd, prceter maculis mimerosis, testd concoloribus, 

 fere circularibus, incBqualibus et irregulariter dispensatis ; mar- 

 yinibus bruneo-rufescente punctatis ; basi subplanulatd, albd; 

 aperturd laid, prcecipue ant ice ; columelld ventricosiusculd ; den- 

 tibus labii prominentibus, cBqualibus, circa quindecim ; dentibus 

 columeliaribus subobsoletis {prceter denteprinio) circa duodecim; 

 dente primo majus prominente deinde antice est incisura pro- 

 funda ; sulco columellari nullo, extremitatibus anticis leviter 

 productis, externe valde convergente ; canali lato et profunda ; 

 extremitatibus posticis obtusis ; canali postico lato, aperturd 

 recte continuo ; ?naryine externo incrassato ; spird lath umbili- 

 catd. 

 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 dottiugs, but less in degree, on the colu- 

 mellar 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 extremicies 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, \^ of an inch ; wide, -f^ 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 Marginellse, as have many others, and from 

 no other source did Montagu himself obtain it. 



