BIRDS OF NORTH AND MIDDLE AMERICA 107 



? Lapogus lapogus ungaviis Hartert, Vog. pal. Fauna, iii, 1921, 1863 (crit.)- 

 L\agopHs] ![agoptis] ungavus Austin, Mem. Nuttall Orn. Club, No. 7, 1932, 74, 

 in text (crit.). 



LAGOPUS LAGOPUS LEUCOPTERUS Taverner 



Baffin Island Ptarmigan 



Adults. — Similar to the corresponding sex and plumage of Lagopus 

 lagopus alascensis, but with the shafts of the primaries and secondaries 

 almost always white ; only occasionally is one partly dusky. 



Juvenal. — None seen ; apparently unknown. 



Downy yotmg. — None seen; apparently unknown. 



Adult male.—Wmg 197-216 (206.1) ; tail 116-125 (121.3) ; length of 

 bill from anterior end of nostril to tip 9.9-12.5 (11.5) ; width of 

 bill at gape 13.6-14.9 (14.3); height of bill at angle of gonys 9.6- 

 10.7 (10.4 mm.). 10 



Adult jemale.—W'mg 188-214 (196.4) ; tail 107-139 (116.7) ; bill from 

 anterior end of nostril to tip 9-12.3 (10.9) ; width of bill at gape 12.1-12.8 

 (12.6); height of bill at angle of gonys 9.1-10 (9.6 mm.).^^ 



Range. — Inhabits the Arctic islands of America from southern Banks 

 Island and the mainland adjacent to Dolphin and Union Straits to 

 Southampton and southern Baffin Islands ; indefinitely northward. One 

 record for Point Barrow, Alaska. 



Type locality. — Camp Kungovik, western coast of Baffin Island, 

 lat. 65° 35' N. 



Lagopus lagopus Taverner, Canada's Eastern Arctic, 1934, 119, text (Lancaster 

 Sound; Melville Island) ; Birds Canada, 1934, 157, in text, part. 



Lagopus lagopus lagopus Sofer, Nat. Mus. Canada, Bull. 53, 1928, 104 (s. Baffin 

 Island). 



Lagopus lagopus leucopterus Taverner, Ann. Rep. Nat. Mus. Canada for 1930 

 (1932), 87 (Camp Kungovik, w. coast of Baffin Island, lat. 65°35' n.). — 

 Sutton, Mem. Carnegie Mus., xii, 1932, 88 (Southampton Island; spec; meas. ; 

 habits). — Taverner, Birds Canada, 1934, 158 in text. — Peters, Check-list Birds 

 of World, ii, 1934, 31 (distr.). — Hellmayr and Conover. Cat. Birds Amer., i. 

 No. 1, 1942,202 (syn. ; distr.).— Bray, Auk, Ix, 1943, 516 (Southampton Island; 

 Baffin Island; Melville Peninsula). 



L[agopus] l[agopus] leucopterus Austin, Mem. Nuttall Orn. Club, No. 7, 1932, 74 

 in text (crit.). — Taverner, Canada's Eastern Arctic, 1934, 119, in text (distr.; 

 chars.). — Salomonsen, Moults and Sequence of Plumage in Rock Ptarmigan, 

 1939, 265, in text (molt). 



^^ Fourteen specimens from Baffin Island, Victoria Land, and Southampton Island. 

 " Eleven specimens from Banks Island, Baffin Island, Southampton Island, and 

 Victoria Land. 



