GLABELLA. 



)RJ^ 



M. albocincta, Sowb. (fig. 15), described from a single specimen 

 in the Taylor collection, is also a synonym. 



Reeve says of it : "I have no good opinion of this species. 

 It appears to be a variety of M. piper ata, in which a white band 

 is formed by an accidental absence of coloring matter." Another 

 synonym is probably the unfigured M. lineato-labrum, Gaskoin. 



M. FDLMINATA, Kiener. PI. 5, fig. 78. 



Whitish, with brown, zig-zag longitudinal painting. 



Length, '75 inch. 



Bahia, Brazil. 

 I have not seen a specimen of this species. 



M. PETITIT, Duval. PI. 5, figs. 76, 77. 



White, longitudinally blotched and reticulated with orange- 

 red or lilac, and numerously speckled with minute brown dots; 

 body-whorl very obscurely shouldered. Length, 1-1'25 inches. 



Senegal ; Cape of Good Hope. 



M. Newcombii, Reeve (fig. 77), appears to be synonymous ; it 

 is said on Cuming's authority to come from L'Agulhas Bank, 

 Cape of Good Hope. 



M. HELMATINA, Rang. PI. 5, tigs. 79, 80. 



White, very minutely, irregularly speckled with light reddish 

 brown, with two narrow bands of chestnut spots. 



Length, '7-1 *4 inches. 



West Africa. 



Narrower and less shouldered than the preceding species. M. 

 Gumingiana, Petit (fig. 80), is merely a larger, finer shell of 

 similar form and painting. 



Section Glabella, Swainson. 



Yolutiform ; spire more or less conic, well developed, usually 

 longitudinally plaited aboilt the shoulder of the body-whorl ; 

 pillar with distinct basal plaits ; lip thick, toothed or crenate, 

 rarely smooth within. 



M. BIFASCIATA, Lam. PI. 6, figs. 81, 82. 



White, more or less clouded with light brown or purple-gray, 

 covered with small, close dflts, usually in revolving series. 



Length, -9-1-25 inches. 



Gape Blanco to Gambia, W. Africa. 



