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Mr.  Grant  Allen  has  advocated  the  view  of  a  correlation  between  the  colours  of  animals
and  the  food  on  which  they  feed.  "  Where  bright  blossoms  are  common  insects  are  brilliant,
while  where  most  blossoms  are  inconspicuous  most  insects  are  dingy."*  "In  short,  the
immense  majority  of  animals  which  do  not  feed  on  bright-coloured  food  are  of  plain  hues,  &c."  f
Mr.  Allen  has  greatly  rehed  on  the  briUiancy  of  flower-frequenting  butterflies  in  support  of  his
theory,  which  might  also  have  been  assisted  by  a  reference  to  the  generally  sombre-hued
Satijrincc,  whose  home  and  sustenance  are  the  wind-fertihsed  grasses,  with  their  obscure  and
degenerate  flowers.  |

Seven  genera  only  can  at  present  be  included  in  this  fauna,  which  is  doubtless  an  insufiicient
enumeration.
Fig.  10.  Posterior  wing,  Jlelanitis
ismene,  sbowing  racdian  nervules.
Fig.  11.  Post,  wiug,  Lethe  europa,
showing  median  nervules.
SYNOPSIS    OF    GENEEA.
1.  First  and  second  subcostal  nervules  of  anterior  wings  emitted  before
end  of  cell.
A.  Posterior  wings  with  their  outer  margins  more  or  less  waved  and
obtusely  augulated.
a.  Median  nervules  of  anterior  wings  with  their  bases  widely  separated.
h.  Costal  nervures  of  anterior  wings  not  dilated.
c.  Nervules  of  posterior  wings  all  well  separated  at  their  bases.
(/.  Lower  disco-cellular  nervule  of  posterior  wings  distinctly

longer  than  the  upper  one. Melanitis.
hh.  Costal  nervures  of  anterior  wings  dilated  towards  base.
c.  Wings  beneath  provided  with  perfect  ocelli.  §
cc.  First  and  second  median  nervules  of  posterior  wings  with
a  common  origin  at  apex  of  cell.
del.  Disco-cellular  nervules  of  posterior  wings  about  or
almost  subequal  in  length.
/.  Antennae  distinctly  clavate.         ....  Lethe.
ff.  Antennse  slender,  the  apical  portion  gradually  but
slightly  thickened.
dihl.  Lower  disco-cellular  nervule  of  posterior  wings  distinctly

longer  than  the  upper  one. Ccelites.
