416 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



(27.18); middle toe, 16.51-19.66 (18.29); hind claw, 10.16-14.48 (11.94); 

 white on lateral tail-feather, 21.59-32.00 (26.67).' 



California in general (except northern coast district and southern 

 coast district south of Sierra San Fernando and Sierra San Gabriel) 

 and eastward over Kocky Mountain plateau to Wyoming, Colorado, 

 New Mexico, western Texas, and noi'th western Tamaulipas; south into 

 Sonora, Chihuahua, Coahuila, Nuevo Leon, and western Tamaulipas 

 (Miquihuana, breeding !). 



Pipilo arcticus (not of Swainson) Gambel, Journ. Ac. Nat. Sci. Phila.,i, 1847, 54 

 (California). — Heeemann, Journ. Ac. Nat. Sci. Phila.,ii, 1852,267 (Califor- 

 nia).— Baikd, Eep. Pacific R. R. Surv., ix, 1858, 927 (Fort Bridger, Wyo- 

 ming).— Hexey, Proc. Ac. Nat. Sci. Phila., 1859, 107 (New Mexico).— 

 ScLATBK, Cat. Am. Birds, 1862, 119, part (California). 



P.\ipilo] arcticus Coues, Ibis, 1865, 165, in text (Fort Whipple, Arizona). 



PipiJo arctica Woodhouse, in Rep. Sitgreaves' Expl. Zuni and Col. R., 185.3, 81, 

 part (New Mexico). 



Pipilo erythrophthalmus, var. arcticus Allen, Bull. Mus. Comp. Zool., iii, July, 

 1872, 168 (Ogden, Utah). 



[Pipilo erytlirophthalmusj var. arcticus Allex, Bull. ilus. Comp. Zool., iii, July, 

 1872, 178, part (mountains of Colorado; Ogden, Utah). 



(?) Pipilo maculatus (not of Swainson) Bonaparte, Consp. Av., i, 1850, 487, part 

 (California). 



^ Twenty-six specimens. 



There is some variation in size according to geographic area, as the following aver- 

 age measurements show: 



Wing. 



Tail. 



Exposed Degtb 



Middle 

 toe. 



Hind 

 claw. 



Length 

 of white 

 on inner 

 web of 

 outer- 

 most tail 

 feather. 



MALES. 



Fifteen adult males from New 

 Mexico, Arizona, Chihuahua, 

 and Sonora 



Ten adult males from Colorado, 

 Utah, Nevada, and e. Oregon. 



Fourteen adult males from Cali- 

 fornia 



FEMALES. 



Ten adult females from New 

 Mexico, Arizona, etc 



Eight adult females from Colo- 

 rado, Utah, etc 



Nine adult females from Cali- 

 fornia 



1 



89.66 

 86.36 

 87.38 



85.85 

 8,3. 82 

 82.04 



104.11 

 96. 52 

 97.64 



99.82 

 96.27 

 92.71 



13.72 I 10.92 



13.21 

 13.72 



27.69 

 27.43 

 27.94 



18.80 I 11.94 

 19.30 I 11.68 



19.81 I 12.70 



9.65 26.67 , 18.03 11.68 

 10.92 27.43 18.54 J 11.43 



13.72 [ 10.41 



I 



.18 i IS. 80 12.4.1 



■J7. 94 

 ■.'S. 45 

 24.89 



Specimen from the Rocky Mountain plateau incline somewhat toward P. m. arcticus, 

 and some specimens, especially among males, are difficult to distinguish satisfac- 

 torily from that form, which itself invades the territory of P. m. megalonyx during its 

 winter migration in Colorado, Utah, and New ^lexico. 



