Leuckart,  R.,  on  the  vedcida  prostatica,  26;  on  the  influence  of  the
age  of  parents  on  the  sex  of  offspring,  277.
Levator  clavicidm,  muscle,  47.
Libellula  depressa,  color  of  the  male,  329.
Libellulidae,  relative  size  of  the  sexes  of,  316;  difference  in  the
sexes  of,  329.
Lice  of  domestic  animals  and  man,  193.
Licentiousness  a  check  upon  population,  52;  prevalence  of,  among
savages,  134.
Lichenstein,  on  Cher  a  progne,  476.
Life,  inheritance  at  corresponding  periods  of,  259,  263.
Light,  effects  on  complexion,  36;  influence  of,  upon  the  colors  of
shells,  298.
Lilford,  Lord,  the  ruff  attracted  by  bright  objects,  469.
Limosa  lapponica,  544.
Linaria^  525;  linaria  raontana,  281.
Lindsay,  Dr.  W.  L.,  diseases  communicated  from  animals  to  man,
8;  madness  in  animals,  89;  the  dog  considers  his  master  his  God,  108.
Linnaeus,  views  of,  as  to  the  position  of  man,  170.
Linnet,  numerical  proportion  of  the  sexes  in  the,  281;  crimson
forehead  and  breast  of  the,  447;  courtship  of  the,  455.
Lion,  polygamous,  247;  mane  of  the,  defensive,  594;  roaring  of
the,  601.
Lions,  stripes  of  young,  528.
Lips,  piercing  of  tlie,  by  savages,  657.
Lithobius,  prehensile  appendages  of  the  female,  310.
Lithosia,  coloration  in,  356.
Littorina  littorea,  296.
Livingstone,  Dr.,  manner  of  sitting  of  gorilla,  172;  on  the  influence
of  dampness  and  dryness  on  the  color  of  the  skin,  220;  on  the
liability  of  negroes  to  tropical  fevers  after  residence  in  a  cold  climate,
220;  on  the  spur- winged  goose,  414;  on  weaver- birds,  427;  on  an
African  night-jar,  436,  457;  on  the  battle-scars  of  South  African
male  mammals,  570;  on  the  removal  of  the  upper  incisors  by  the
Katokas,  656;  on  the  perforation  of  the  upper  lip  by  the  Makalolo,
657;  on  the  Banyai,  661.
