34 (11YPTOSPIRA. 



with a darker tint ; lip narrowly margined externally with 

 orange-red. Length, '5 inch. 



West Indies, Bahamas. 



Has the form of M. apicina, but differs remarkably in its 

 diaphanous texture. 



M. NITIDA, Hinds. PI. 10, figs. 92, 93. 



Thin, pellucid, amber-color ; more cylindrical than M.pellucida, 

 with the spire more produced. Length, *45 inch. 



Tampa Bay, Fla. 



M. nitida was described without locality, but both description 

 and figure so entirely correspond with 717. succinea, Conrad (fig. 

 93), that I cannot doubt their identity. M. succinea is figured 

 from the author's type. 



M. WALLACEI, Jousseaume. PI. 10, figs. 94, 95. 



Orange-brown with a central white zone ; columella obliquely 

 four-plaited ; lip white, thickened and margined, minutely arid 

 irregularly dentate within. Length, 12 mill. 



Locality not certain, probably West Indies. 



The minute lip-denticulations, if permanent, separate this 

 species widely from its nearest allies in form and coloring ; 

 otherwise it is very like a small M. carnea. 



M. CANTHARUS, Reeve. PI. 10, fig. 96. 



Transparent horny, rather solid, obscurely banded ; lip thick- 

 ened, opaque white. Length, 11 mill. 



Habitat unknown. 

 M. CAPENSIS, Dunker. PI. 10, fig. 97. 



White, tinged or obscurely banded with very light orange- 

 brown. Length, 12 mill. 



Cape of Good Hope. 

 Of rather inflated growth. 



M. PAXILLUS, Reeve. PI. 10, fig. 98. 



White or tinged with orange-brown ; spire somewhat exserted, 

 body-whorl rather swollen above, attenuated below ; lip thickened, 

 smooth, flexuous ; columella four-plaited. Length, 8-9 mill. 

 Off Florida (Pourtales) ; West Coast of Florida ( Jewett). 



Described by Reeve without locality. 



M. REDFIELDII, Tryon. PL 10, fig. 99. 



Smooth, polished, white or yellowish ; narrow, spire drawn 



