Order  y. 
OALLIM. 
fifth 
havi 
CHIONl  DIDyE,  or  Sheathbills, 
the  BiU 
^asal  late  1 ^^ate,  the  culmen  much  arched  to  the  tip,  the  sides  much  compressed ; the  nostrils 
and  • * P^^tected  by  a bony  covering,  or  only  partly  closed  by  a horny  membrane  ; the  Wings 
Waited  at  t"  ■ moderate ; the  Tax's!  short  and  strong  ; the  Toes  long,  and  the  anterior 
Psir  base ; the  hind  toe  short  and  elevated. 
ones 
Sw  Subfamily, 
THINOCORINiE,  or  Shore-Larks, 
have  the  B'H 
lateral^  hort,  rather  slender,  broad  at  the  base,  and  compressed  on  the  sides  ; the  nostrils  basal, 
V short  f the  opening  lunate,  and  mostly  closed  by  a horny  membrane,  which  is  covered 
leathers. 
^ Attagis  /.  Geoffr.  et  Less.^ 
*®^he  tip  broad  at  the  base,  and  gradually  compressed  on  the  sides  ; culmen  slightly  curved 
^'^vered  by  obtuse  ; the  nostrils  placed  in  an  ample  nasal  channel  with  the  opening  semilunar,  and 
first  and  membrane,  which  is  clothed  with  small  feathers.  Wings  long  and  pointed,  with 
^^tirely  CO  longest.  Tail  short,  broad,  and  rounded.  Tarsi  very  short,  robust,  and 
small  ^bh  reticulated  scales.  Toes  long,  and  covered  above  with  transverse  scales ; the  hind 
elevated  ; the  claws  lengthened  and  curved. 
the  bounda^^^^*^  Falkland  Islands,  and  on  the  lofty  mountains  of  the  southern  portion  of  South  America, 
Pairs  or  alpine  plants,  or  even  in  places  that  appear  entirely  destitute  of  vegetation.  They  are  usually 
^ m their  habit  ^ ^rid  when  flushed  utter  loud  cries.  Their  flight  is  like  that  of  the  grouse ; they  are  very 
> and,  if  suddenly  surprised,  they  lie  close  to  the  ground  for  concealment. 
1.  A 
2 I.  GeofF 
■ T Zool.  t.  47.  3.  A.  mahuinus  CBodd.)  PI.  wil.  222.  — Tetrao  falklandicus 
Less  111  7 ; 
LI-  de  Zool.  t. 
41. 
3.  A.  mahuinus  (Bodd.) 
Gmel. 
* 
Established  by  MM.  Isidore  Geoffrey  and  Lesson  in  18.30  {Centurie  Zoologie). 
