348 BULLETIN SO, UNITED STATES NATIONAL MUSEUM. 



Adult male— Length (skins), 264-337 (298); wing, 142-156J 

 (149.4); tail, 121-158 (138.4); exposed culmen, 12.5-14.5 (13.7) 

 tarsus, 19-21.5 (20); middle toe, 18.5-22 (20.2).° 



Adult female— Length (skins), 251-310 (281); wing, 132.5-15! 

 (143.2); tail, 117-158 (127.3); exposed culmen, 13-15 (13.8); tarsus 

 18-20.5 (19.2); middle toe, 18.5-20.5 (19.3). b 



a Twenty-nine specimens. 



6 Ten specimens. 



Locality. 



Wing. 



Tail. 



Ex- 

 posed 

 culmen, 



Tarsus. 



Middl 

 toe. 



MALES. 



One adult male from Mackenzie 



Two adult males Irom North Dakota 



Two adult males from Idaho 



Three adult males from Utah 



Two adult males from Nevada 



One adult male from eastern Oregon 



Five adult males from California 



One adult male from San Clemente I., California 



One adult male from southern Lower California (different sub- 

 species?) 



Four adult males from Arizona 



Five adult males from New Mexico 



Two adult males from western Texas 



One adult male from Sonora 



FEMALES. 



One adult female from Wyoming 



One adult female from Utah 



Three adult females from California 



One adult female from southern Lower California (different 



subspecies?) 



Two adult females from Arizona 



Two adult females from New Mexico 



One adult female from Chihuahua 



146 



144. S 



144.2 



147.5 



144.2 



146 



148.3 



146 



144 



147.4 



146.3 



149.2 



156.5 



146 

 144 

 145.7 



124 

 138.5 

 138 

 152 



138.5 

 128.7 

 128.2 

 138.8 

 135.7 



141.3 

 133 



124 

 145.7 

 137.2 

 136 



158 



133.5 



132 



124.3 



117 

 121 

 117.2 

 158 



14.5 



13.5 



13.2 



13.7 



13.5 



14 



13.5 



14 



14 



14.2 



13.4 



13.5 



13 



14 



14.5 



13.8 



13.5 

 13.2 

 15 



20 



20 



20 



20 



20 



19 



19.9 



19.5 



20 



20.4 



20.2 



20 



20.5 



19 



18.5 



20.2 



19 



18.2 



18.7 



20. 

 20. 



21 

 20. 

 20. 



21 

 20. 

 20 

 20. 

 19 



20 



18. 

 19. 



19 

 19 

 19 

 19. 



The specimens from the Cape San Lucas district of Lower California seem to represen 

 a distinct form, but unfortunately only three specimens have been examined , and thee 

 are in winter plumage. Compared with specimens of Z. m. marginella taken at th 

 same season, these examples from southern Lower California are altogether of brownt 

 coloration, and I strongly suspect that they represent an easily distinguishable Iocs 

 form. 



The existence of another very distinct form peculiar to the humid coast district < 

 Oregon and Washington is indicated by three very poor specimens in the series exair 

 ined. The adult male of this form is characterized by a very saturated coloratioi 

 the under parts as deeply colored as in Z. m. macroura and Z. m. clarionenm, and tl 

 color of the forehead, anterior portion of crown, and sides of crown and occiput (supe: 

 ciliary region) darker than in any other form of the species, being, in a winter specimei 

 deep fawn color approaching mikado brown. This form, which I separate, provi 

 ionally, as Zenaidura macroura caurina (provisional type, No. 22540, coll. U. S. Na 

 Mus., Oregon; T. R. Peale, collector), most resembles in coloration of the head Z. it 

 tresmarix, but the under parts are more deeply colored and the chin, instead of beii 

 buffy white, in contrast with the adjacent color, is light pinkish cinnamon. 



