388 



A small, 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. Mauginella evanida (pi. lxxv. f. 69.), nobis. 



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

 columella quadriplicate plicis duabus anticis tumidis ; labio externo 

 crasso, in medio incurvo, extus 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 ; locality unknown. 



56. Mauginella minima (pi. lxxviii. f. 220.), Guilcling. 



M. minutissima, alba, pellucida, subcylindrica, antice oblique 

 sub-angusta ; spira vix exserta ; columella antice insequaliter tri- 

 plicate ; labio externo postice angidatim elevato, intus lsevi, extiis 

 vix varicosa. 



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

 lip smooth, and three unequal folds on the columella. 

 From St. Vincents. 



57. Mauginella monilis (pi. lxxvi. f. 117, 118.), Lam. 

 (Volvaria) vii. p. 363. 



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

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

 antice varicoso ; apertnra elongata, columella tumide expansa, plicis 

 sex, quarum posticis tribus parvis, anticaunica 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 thickened 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. Marginella triticea (pl.lxxvi. f.119,120, 121.), LamarJc, 

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



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

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



