Shell  globular,  somewhat  compressed  below,  usually  ratho'
solid  and  nearly  opaque,  glossy,  yellowish  mottled  with  brown,
mostly  having  a  single  brown  spiral  band  round  the  middle  of
each  whorl  or  a  HtUe  above  it,  closely  but  coarsely  and  irre-
gularly ridged  in  the  line  of  growth,  and  very  finely  striate  in
a  spiral  direction :  epidermis  rather  thin :  wharh  5--6,  convex,
the  last  occupying  about  three-fifths  of  the  shell :  9pire  vaiy-
ing  in  length,  but  usually  depressed  and  always  ending  in
a  blunt  point :  suture  rather  deep :  movih  forming  a  segment
of  two-thirds  of  a  circle :  outer  lip  thick,  white  and  refleetxsd,
sometimes  strengthened  by  an  internal,  but  not  well-defined
rib,  much  inflected  above  and  rounded  beneath :  inner  Up  oon-

*  Inhabiting  oopaes.
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H£LIX.  189

sistmg  of  a  mere  film  which  is  spread  on  the  columella :  umbi-
licus very  small  and  oblique,  nearly  concealed  by  a  fold  of  the
outer  lip.     L.0'5.  B.  0-8.
Yar.  1 .  Jlaveseens.    Shell  yeUowish-white,  generally  without
any  band.
Yar.  2.  major.    Shell  larger :  spire  more  depressed.    L.  0*7.
B.  1.
Yar.  3.  alpestris,  Ziegler.    Shell  smaller :  spire  more  raised.
L.  0-5.   B.0-65.^

Yar.  4.  fusea,  Femssac.     Shell  dark-brown,  with  or  with-
out the  band,  yeiy  thin  and  semitransparent.
