278 BULLETIN 50. UNITED STATES NATIONAL MUSEUM 



bb. Flanks gray or olive-brown. 



c. Throat solid black rimmed with white. 

 d. Back averaging more brown than gray in fresh plumage. 

 e. Back very dark, averaging more olive-brown than grayish brown 

 (coastal belt from southwestern Oregon to Santa Cruz County, 



Calif.) Lophortyx californica brunnescens, $ (p. 284) 



ee. Back lighter, averaging more grayish brown than olive-brown. 

 /. Larger, wings averaging 116 mm. (Catalina Island). 



Lophortyx californica catalinensis, $ (p. 286) 

 //. Smaller, wings averaging 110 mm. (coastal belt from San Francisco 

 south to San Diego, and interior valleys west of the Sierra Nevada.) 

 Lophortyx californica californica, $ (p. 279) 

 dd. Back averaging more gray than brown in fresh plumage. 

 e. Back with considerable olive-brownish suffusion. 

 /. Darker, the breast deep neutral gray (southern Baja California). 



Lophortyx californica achrustera, $ (p. 289) 

 //. Paler, the breast neutral gray (Owens Valley, east-central California). 

 Lophortyx californica canfieldae, o (p. 290) 

 ee. Back with little or no olive-brownish suffusion. 



/. Darker, the breast neutral gray (northwestern Baja California). 



Lophortyx californica plumbea, $ (p. 287) 

 //. Paler, the breast light neutral gray (Warner Valley, Oreg.). 



Lophortyx californica orecta, o (p- 290) 

 cc. Throat not solid black rimmed with white. 

 d. Throat black barred with white. 

 e. Breast very pale — smoke gray with a faint bluish tinge (Sonora). 



Lophortyx douglasii bensoni, $ (p. 302) 

 ee. Breast darker — light neutral gray or darker. 



/. Breast feathers mostly with indistinct pale rufescent terminal spots 



(Chihuahua) Lophortyx douglasii languens, $ (p. 305) 



//. Breast feathers mostly with no such spots. 

 g. With a wing tip of 15-20 mm. 



h. General coloration averaging darker, gray of breast and abdomen 



neutral gray, white abdominal spots more or less ringed with 



blackish (Nayarit) .Lophortyx douglasii impedita, o (p. 304) 



hli. General coloration averaging paler, gray of breast and abdomen 



light neutral gray, white abdominal spots with no blackish rings 



(Sinaloa) Lophortyx douglasii douglasii, $ (p. 299) 



gg. With little or no wing tip (Jalisco). 



Lophortyx douglasii teres, S (p. 303) 

 dd. Throat not black barred with white, but grayish or grayish buffy streaked 

 with duskJ^ 

 e. Back decidedly brownish. 

 /. Upperparts dark olive-brown; breast brownish (coastal belt from 

 southwestern Oregon to Santa Cruz County, Calif.). 



Lophortyx californica brunnescens, 9 (p. 284) 

 //. Upperparts grayish brown ; breast grayish. 



g. Larger, wings averaging 116 mm. (Catalina Island). 



Lophortyx californica catalinensis, 2 (p. 286) 

 gg. Smaller, wings averaging 108 mm. (coastal belt from San Francisco 

 Bay south to San Diego and inland west of Sierra Nevada). 



Lophortyx californica californica, $ (p. 279) 



