VOLVAIUA. 49 



The channeled suture is the distinguishing feature of this 

 species — for which Dr. Weinkautf has proposed the subgeneric 

 name Canaliapira. 



M. ZONATA, Kiener. PI. 12, figs. 92-94. 



Thin, whitish, either very broadly banded, or lineated above 

 and below with fulvous orange. Length, -3 inch. 



Cape of Good Hope; Madagascur; West Indies. 



In M. zonata (fig. 92), the coloring nearly covers the body- 

 whorl in a single band; and with this variety corresponds M. 

 Dunkeri, Krauss. In M. bilineata, Krauss (figs. 93, 94), the 

 shell is white, bilineated with chestnut. Sometimes the broad 

 band is present, with the deeper colored lineations defining its 

 margins, and in one specimen before me the band is visible on a 

 portion of the whorl only, but the lineations are present. 



M. PUBLLA, Gould. 



Resembles 31. zoaata, but is much larger, with no traces of 

 bands. The animal is very active, of a pale lemon-color, with 

 blotches of flake-white and very numerous crimson points ; 

 margin of mantle dark chocolate. Length, 12 mill. 



Simon s B ly, So. Africa, 18 fathoms, gi-avelly bottom. 



Unfigured. 



M. MiCANS, Petit. PI. 13, fig. 95. 



Whitish, with two broad bands of chestnut. Length, 8 mill. 



Abd-el-Oouri E. Coast of Africa. 



M. LACTEA, Kiener. PI. 13, figs. 98, 99. 



White or ci'eam-colored, columella four-plicate. 



Length, 8 mill. 



West Indies, 



M.affinis, Reeve (fig. 99), appears to be this species, Reeve 

 having figured the next species for lactea. M. abbreviata^ G. B. 

 Adams, is also probably a synonym. 



M. SUBTRIPLICATA, Orb. PI. 13, fig. 100. 



White or cream-color, more c^dindrical than M. lactea, with 

 more produced spire, columella three-plaited, shell larger. 



Length, 10 mill. _ 



West Indies. 



