Curlews,  double  moult  in,  442.
Cursores,  comparative  absence  of  sexual  differences  among  the,  248.
Curtis,  J.,  on  the  proportion  of  the  sexes  in  Athalia,  286.
Cuvier,  F.,  on  the  recognition  of  women  by  male  quadrumana,  9;
Cuvier,  G.,  on  the  number  of  caudal  vertebrae  in  the  mandril,  65;  on
instinct  and  intelligence,  75;  views  of,  as  to  the  position  of  man,  170;
on  the  position  of  the  seals,  170;  on  Hectocotyle,  297.
Cyanakyoiif  sexual  difference  in  colors  of,  520;  immature  plumage
of,  532.
Cyanectda  »uecica,  sexual  differences  of,  537.
Cychrus,  sounds  produced  by,  345,

Cycnia  mendica,  sexual  difference  of,  in  color,  358.
Cygnus  ferus^  trachea  of,  424;  cygnus  immutabUis,  550;  eygnus
olor,  white  young  of,  550.
CyUo  Leda,  instability  of  the  ocellated  spots  of,  486.
Cynanthus  ,  variation  in  the  genus,  481.
Cynipidae,  proportion  of  the  sexes  in,  286.
CynocepJudus,  difference  of  the  young  from  the  adult,  9;  male
recognition  of  women  by,  9;  polygamous  habits  of  species  of,  246;
cynocephidus  bfdxmin,  710;  cynocephalus  cJuicma,  79;  cynocephalus
gelada,  92;  cynocepJuilus  Junnadryas,  92,  674;  sexual  difference  of
color  in,  614,  710;  cynocephalus  leucophus,  colors  of  the  sexes  of,
614,  710;  cynocephalus  mormony  colors  of  the  male,  614,  710 ;  Cyno-
ceplcalus  porcaHus,  mane  of  the  male,  594;  cynocephalus  sphinx,  710.
(Jynopitheeus  niger,  ear  of,  18.
(Jypridina,  proportions  of  the  sexes  in,  287.
Cyprinidae,  proportion  of  the  sexes  in  the,  282;  cyprinidae,  Indian,


736  INDBX.
Crprinodontidte,  sexaal  differences  in  the,  880,  882.
(Mrinui  auratus,  388.
C^fpris,  relations  of  the  sexes  in,  287.
Cyriodaetylw  rvbidus,  402.
dyttaphora  eristata,  hood  of,  603.
Daceto,  sexual  difference  of  color  in,  520;  daeelo  gaudiehaudi,
young  male  of,  532.
Dal-ripa,  a  kind  of  ptarmigan,  280.
DanujUu  a&ifrons,  peculiar  markings  of,  621 ;  damalis  pygarga,
peculiar  markings  of,  621.
