BIRDS OF NORTH AND MIDDLE AMERICA 297 



LOPHORTYX GA^IBELII PEMBERTONI Tan Rossem 



' Tibur6n Island Quail 



■ , ' ' ■ . ' ■'] 



Adult «'ia/e.— Similar to that of the nominate race, but paler, purer 

 gray, above with little or no olive wash, the gray of the anterior upper- 

 parts between neutral gray and light neutral gray. 



Adult jcmale. — Similar to that of the nominate race but paler, the 

 upperparts gray with little or no olive wash, the elongated feathers of 

 the sides and 'flanks paler, as in the' Texan race, ignoscens. 



Adidt male.— Wmg 119; tail 97; culmen from base 13, tarsus 31, mid- 

 dle' toe without claw 28.5 mm. (1 specimen). 



Adult female. — ^Wing 113-115; tail 88-93; culmen from base 12-13; 

 tarsus 30.5-31 ; middle toe without claw 27-28 mm. (2 specimens). 



Range. — ^Confined to Tiburon Island, Gulf of California. 



Type locality. — Petrel Bay, just south of Narragansett Point, east 

 side of Tiburon Island, Sonora, Mexico. 



Lophortyif gamhelii pemhertoni van Rossem, Trans. San Diego Soc. Nat. Hist., vii, 

 1932, 132 (Petrel Bay, Just south of Narragansett Point, east side of Tiburon 

 Island, Sonora, Mexico; descr. ; crit.). — Peters, Check-list Birds World, ii, 1934, 

 46.— Hellmayr and Conover, Cat. Birds Amer., i, No. 1, 1942, 236 (syn. ; distr.). 



LOPHORTYX GAMBELU SANA Mearns 



' CoLoKADo Gaiibel's Quao, 



Adult male. — Similar to that of the nominate race but darker, the 

 upper back gray with little or no olive wash, the general tone being be- 

 tween neutral gray and light mouse gray (being nearest to L. g. pember- 

 toni in this regard, but darker). 



Adidt female. — Similar to that of the nominate race, but dififering from 

 it in the sani'e way that the males of the two forms do. 



.Adult male. — Wing 117, tail 84; culmen from the base 14;, tarsus 32; 

 middle toe without claw 29 mm. (1 specimen). 



Adult female. — Wing 115-117; tail 85-86; culmen from base 14—15; 

 tarsus 26-29; middle toe without claw 27-28 mm. (2 specimens). 



Range. — Resident in western Colorado in the drainage areas of the 

 Uncompahgre and Gunnison Rivers and the portion of the Rio Grande 

 Valley lying in Colorado. 



Type locality. — Olathe, Montrose County, Colo. 



Callipepla gambeli (not Lophortyx gambelii Gambel) Cooke, Colorado State Agr. 



Coll. Bull. 37, 1897, 70 (sw. Colorado, 40 miles sw. of Fort Lewis). 

 Lophortyx gamheli Sc;.ater, Hist. Birds Colorado, 1912, 144 .( Colorado ; doubtful). 



— FiGGiNS, Auk, xxxi,,1914, 62, 64, 68, in text (Colorado; meas. ; crit.). 

 Lophortyx gamhelii Cooke, Colorado State Agr. Coll. Bull. 56, 1900, 202 (cited; syn.). 

 Lophortyx gamhelii, saniis Me.^rns, Proc. Biol. Soc. Washington, xxvii, 1914, 113 



(Olathe, Montrose County, sw. Colorado; coll. U. S. Nat. Mus.).— American 



ORNriHOLOGiSTS' Union, Auk, xl, 1923, 517 (sw. Colorado; Check-list No. 



29So).— Peters, Check-list Birds World, ii, 1934, 45. 



