388 



A smallj pale^ oval shell, with short spire, and aperture pro- 

 portionately lengthened. The outer lip is smooth. The collu- 

 mellar folds are small. The specimen is in Mr. Bell's Collection. 



Locality unknown. 



55. Maeginella evanida (pi. Ixxv. f. 69.), nolis. 



M. elongato-ovali, Isevi, alba ; spira brevi ; apertura angustata ; 

 coliunella quadripKcata, pHcis duabus anticis tumidis ; labio externo 

 crasso, in medio incurvo, extris vix varicoso. 



The outer lip of this small white species is thick, and bent 

 inwards so as to narrow the aperture. The last two of the four 

 folds on the collumella are close together and tumid. 



Mr. Bell's Collection; locaKty unknown. 



56. Marginella minima (pi. Ixxviii. f. 220.), Guilding. 



M. minutissima, alba, peUucida, subcyKndrica, antice oblique 

 sub-angusta ; spii'a vix exserta ; columella antice insequaliter tri- 

 plicata; labio externo postice angulatim elevato, intus Isevi, extiis 

 vix varicosa. 



A very minute, transparent, wliite, oval shell ; with the outer 

 lip smooth, and three unequal folds on the columella. 



Trom St. Vincents. 



57. MARGEsrELLA MONiLis (pi. Ixxvi. f. 117, 118.), Lam. 

 (Volvaria) vii. p. 363. 



M. ovali, sub-cylindrica, opaca, nitida, lactea; spira vix pro- 

 ducta, anfractu ultimo ad apicem tumide elevato ad latera calloso, 

 antice varicoso ; apertura elongata, columella tumide expansa, plicis 

 sex, quarum posticis tribus parvis, aiitica unica parva, sub-retusa ; 

 labio externo crasso rectiusculo, postice emarginato, antice sub- 

 quadrato, vix emarginato ; extiis leviter varicoso. 



A small, white, oval or sub-cylindrical species, with the spire 

 nearly hidden by the tumid elevation of the outer lip. The colu- 

 mellar lip is spread and tliickened so as to form a kind of lateral 

 edge to the back of the shell, which is continued round the last 

 whorl. Great numbers of this species are used by the Africans 

 for necklaces. 



From Senegal. 



58. Maeginella triticea (pl.lxxvi. f.119,120, 121.), LmnarTc, 

 (Volvaria) vol. vii. Voluta exihs, Wood's catalogue. 



M. elongatfi, sub-conica, postice subangulata, antice sub-coarc- 

 tata, pallida fulva, fasciis tribus latis, fulvis vel cincta; spira 



