BIRDS OF NOETH AND MIDDLE AMEKICA. 



359 



and Durango to northern Jalisco (Bolanos), Territory of Tepic (Santa 

 Teresa), and Zacatecas (Plateado, Valparaiso Mountains, etc.).'' 



OyanodUa stdleri (not Corvus stetteri Gmelin) Gambel, Journ. Ac. Nat. Sci. 

 Phila., 2cl ser., i, 1847, 45, part (Rooky Mta.).— Scott, Auk, iv, 1887,20 

 (Santa Catalina and Pinal mountains, Arizona). 



Cyanocorax steUeri (not of Bonaparte) Gambel, Proc. Ac. Nat. Sci. Phila., 1847, 

 201, part (Rocky Mts.).— McOall, Proc. Ac. Nat. Sci. Phila., 1851, 216 

 (New Mexico). — Woodhousb, in Rep. Sitgreaves' Expl. Zuni and Col. R., 

 1853, 77 (New Mexico). 



Oyanura stelleri Codes, Ibis, 1865, 159, in text (Raton Mta., New Mexico). 



Oyamirus stelleri Scott, Bull. Nutt. Orn. Club, iv, 1879, 94 (Twin Lakes, Colorado). 



C[yanogarrulus\ diadematus Bonaparte, Consp. Av., i, May 6, 1850, 377 (Zaca- 

 tecas, w. centr. Mexico; coll. Darmstadt Mus.). 



[Lophocorax] diadematus Kaup, Journ. fiir Orn., ii, Nov., 1854, p. Iv. 



Oyanocitta diademata Salvin and Godman, Biol. Centr. -Am., Aves, i, 1887, 490, 

 part (Zacatecas; not description, which =G s. azteco Ridg way). 



"Pour specimens from Durango (Cerro Prieto) and the above-mentioned localities 

 in Zacatecas and northern Jalisco are decidedly smaller than more northern examples, 

 and are appreciably though not distinctly different in color. Instead of showing an 

 approach in the latter respect to C. s. aztecn, or C. s. coronata, as might reasonably be 

 expected from geographical considerations, exactly the reverse is the case, the dis- 

 tinctive features of the maerolopha type reaching their maximum development in this 

 series. The differences from typical examples of C. s. maerolopha, while appreciable, 

 are, however, of such a character that I would not, without more ample material, 

 favor the subspeciflc separation of these southern birds. 



The average maximum and minimum measurements of this series and of a series 

 from the United States are given herewith : 



Locality. 



Wing. 



Tail. 



Ex- 

 posed 

 culmen. 



Depth 

 of bill 

 at nos- 

 trils. 



Tarsus. 



Middle 

 toe. 



AVEKAGE, MALES. 



Eight specimens from United States 



Two specimens from Durango and Zacatecas 



AVEKAGE, FEMALES. 



Seven specimens from United States 



Two specimens from Zacatecas and northern 

 Jalisco 



MAXIMUM, MALES. 



Eight specimens from United States 



Two specimens from Durango and Zacatecas 



MAXIMUM, FEMALES. 



Seven specimens from United States 



Two specimens from Zacatecas and northern 

 Jalisco 



MINIMUM, MALES. 



Eight specimens from United States , 



Two specimens from Durango and Zacatecas 



MINIMUM, FEMALES. 



Seven specimens from United States 



Two specimens from Durango and Zacatecas 



153.5 

 147.5 



145 

 136 



159.5 

 151 



153 

 139. 5 



148 

 143 



136.5 

 132 



142.6 

 135 



131 

 127.5 



163 

 139.6 



141.5 

 131.5 



131 

 130 



122 

 124 



28.5 

 26.5 



26.5 

 23.6 



29 

 26 



27.6 

 24 



27.6 

 25 



25.5 

 23 



9.5 

 9.5 



43.5 

 43 



10 

 10 



45 

 43 



41.5 

 42.5 



40.5 

 36.5 



24.5 

 22 



23 

 20.6 



25.5 

 22.6 



24 

 20.5 



22.5 

 21 



21.6 

 20.6 



