Female. — Similar  to  Q.  discors  but  the  pltmiage
darker  and  more  heavily  streaked,  the  breast
deeply  tinged  with  brown.
Young. — Similar  to  female.
A  species  common  throughout  the  western
United  States.  Three  were  shot  by  a  party
with  Commander  Marshall  Collins,  U.S.N,  early
in  January  1925,  on  the  Rio  Chico.
8.     Dafila  acuta  tzitzihoa  (Vieillot)
Pintail

Dafila  acuta  stone,  Proc.  Phila.  Acad.  Nat.  Sci.,  1918,  p.
247.
Adult   male. — Length   715   mm.    (28.00   in.);
tail  215  mm.  (8.50  in.).     Head  and  throat  olive
97


LESSER  SCAUP  DUCK


brown  ending  abruptly,  a  blackish  streak  down
the  hindneck  bordered  by  white  lines  extending
up  from  the  white  breast;  foreneck  white,  rest
of  body  whitish  marked  with  fine  wavy  lines  of
blackish  (faint  on  under  parts),  giving  a  gray
effect;  wing  coverts  dark  brownish  gray,  the
greater  ones  brown  tipped ;  wings  with  a  purplish
green  patch  narrowly  bordered  with  white  be-
hind. Middle  tail  feathers  greatly  elongated,
slender  and  tapering.     Bill  and  feet  slate  gray.
Female. — Length  578  mm.  (22.75  in.);  tail
120  mm.  (4.75  in.).  Upper  parts  mottled  gray,
buff  and  brown,  breast  buffy  brown  spotted
with  dusky,  otherwise  whitish  below  with  dark,
markings  on  sides;  wing  patch  chiefly  grayish
brown,  white-bordered.  Tail  pointed,  but  middle
feathers  not  greatly  elongated.
Young. — Similar  to  female.
A  rare  migrant.  Its  pointed  tail  and  unusu-
ally long  neck  are  noticeable  in  life.
9.     Marila  affinis  (Eyton)
Lesser  Scaup  Duck

Length  408  mm.  (16.00  in.) ;  tail  65  mm.  (2.50
in.).
