206 



diminishes ; the under surface white ; under wing-coverts pearl-grey, 

 almost white on the edge. 



Immature. Similar, with a gradual diminution of the brown 

 markings and a corresponding increase of white in the primaries. 



It must be admitted that there is often considerable difficulty 

 in distinguishing between the young of this species and of L. macu- 

 lipennis. The easiest test is the larger proportion of white in the 

 former, especially on the Brd quill, in which the black of the inner 

 web is quite detached from the shaft ; whereas in young L. maculi- 

 pennis the black reaches the shaft till the bird is a year older. As 

 already stated, the latter species is a trifle the larger. 



Hah. Southern Patagonia, Tierra del Fuego, the Falkland Islands, 

 the Straits of ilagellan, and along the coast of Chile up to Coquimbo. 



a-c. Ad. et $ 



vix ad. sk. 

 d, e. Ad. sk. 

 /. Ad. hiem. sk. 



g. S ad. hiem. 



sk. 

 h. Ad. St. 



i. Ad. hiom. sk. 



k. Ad. sk. 



I. Ad. sk. 



m-o. Ad. sk. 



p. Ad. sk. 



q-to. 

 x,y. 



Pull. sk. 

 Juv. sk. 

 Juv. sk. 



b', c'. Ad. hiem. 

 et juv. sk. 



d'. Juv. st. ; e' . 



Juv. sk. 

 /'. Ad. sk. 



S ad. sk. 

 (5' inim. sk. 

 S ad. sk. 



Egg Harbour, S.E. Patagonia, H. Saunders Coll. 



45° S., 65° W., Aug. (,/. Young). 



Falkland Islands (Leconte). Salvin-Godmaa Coll. 



Falkland Islands {Abbott). J. Gould [P.]. (? Type 



of L. 7'oseiventris, Gould.) 



Falkland Islands {Antarctic The Admiralty [P.]. 



Expedition). 

 Salvador Bay, East Falkland The Admiralty [P.]. 



(Antarctic Expedition) . 

 Berkeley Sound, East Falkland The Admiralty [P.]. 



{Antarctic Expedition). 

 Berkeley Sound, East Falkland, McCormick Bequest. 



Sept. 6, 1842. 

 Uranie Bay, East Falkland, McCormick Bequest. 



Nov. 21, 1842. 

 East Falkland Island {Dr. M. H. Saunders Coll. 



Rogers). 

 East Falkland Island {F. Cole- II. Saunders Coll. 



man). 

 East Falkland Island {Dr. II. Saunders Coll. 



Walter Dale). 

 East Falkland Island (1-2 H. Saunders Coll. 



months old) {Br. W. D.). 

 EastFalklaudlsland( 10 months), II. Saunders Coll. 



May 23 {Dr. W. D.). 

 Straits of Magellan. 



K. Ad. St. 

 /'. Imm. sl 



Straits of Magellan, Jan. 4, 



1837. 

 Cape Horn. 



Cape Gregory, Strs. Magellan, 



Jan. {Dr. Coppinger). 

 Messier Channel, Magellan 



Territory, Jan. 4, 1876. 

 Talcahuano, Chile, Sept. 8, 1879 



{Br. Coppinger). 

 Chile (Bn/dges). 

 Chile {E. C. Reed). 



Sir W. Burnett & 

 Capt. Fitzroy, R.N. 



Clias. Darwin, Esq. 



[P.]. 

 Capt. KellettiSr Lieut. 



Wood, R.N. 

 Voy. II.M.S. 'Alert.' 



Voy. H.M.S. 'Chal- 

 lenger. ' 

 Voy.H.M.S. 'Alert; 



Purchased. 

 Salvin-Godman Coll. 



