BIRDS OF NORTH AND MIDDLE AMERICA. 



363 



(Encarnacion, El Chico, etc.), along the southwestern side, through 

 Oaxaea and Guerrero, to Colima (Sierra Madre).'* 



Garrulus corunalus Swainson, Philos. Mag., new ser., i, 1827, 437 (table-laud of 

 Mexico; type lost; see Salvin and Godman, Biol.-Centr.-Am., Aves, i, 1887, 

 491).— Jardine and Selby, Illustr. Orn., ii, 1828 (17), pi. 64 (table-land of 

 Mexico). — ScHLEGEL, i\Ius. Pays-Ba.s, Coraces, 1867, 63, part (Mexico). 



P[ica] coronata Wagler, Isis, 1829, 750 (Mexico). 



Ciianuruii coronatns Swainson, Fauna Bor.-Ain., ii, 1831, 495 (Mexico). — Sclater 

 and Salvin, Ibit?, 1859, 22 (Los Choyos and Altos, (Tuatemala). 



[Cyanurus] coronatns Gray, Hand-list, ii, 1870, 4, no. 6086. 



Cyanura coromtta Kaird, Rep. Pacific^ R. R. Surv., ix, 1858, 583, footnote. — 

 Sclater, Proc. Zool. Soc. Loud., 1859, 381 (Juquilla, Oaxaea). — Sumichrast, 

 Mem. Bost. Soc. N. H., i, 1869, 554 (alpine reg. Vera Cruz). — Baird, Brewer, 

 and RiDGWAY, Hist. N. Am. Birds, ii, 1874, pi. 39, fig. 4. 



Cyanocorax coronatns Bonaparte, Proc. Zool. Soc. Lond., 1837, 109 (Mexico), 

 115 (Guatemala); 1850, 115 (Mexico); Nuov. Ann. Sci. Nat. Bologna, ii, 

 1839, 343. 



C[yan<)Corax] coronatus Gray, Gen. Birds, ii, 1845, 307. 



\_Cyanogarrulns'] coronaiit-s Bonaparte, Consp. Av., i, 1850, 377 (Mexico). 



Cyanocitta coronata. Strickland, Ann. Nat. Hist., 1845, 261. — Sclater, Proc. 

 Zool. Soc. Lond., 1858, 302 (La Parada, Oaxaea) , 359 (pine region of Hondu- 

 ras, between Seguatepeque and Taulevi); Cat. Am. Birds, 1862, 142 (Mexico; 

 Guatemala). — Taylor, Ibis, 1860, 112 (pine reg. Honduras). — Lawrence, 



" Specimens from Guatemala and Chiapas have, as a rule, the white spot on lower 

 eyelid better developed (apparently it is never absent, as is frequently the case with 

 Mexican examples), the grayish white throat-patch larger and almost unbroken, and 

 the general coloration slightly more uniform blue. Specimens from Hidalgo, while 

 having the crest ecpially blue, have the frontal streaks whiter, the l)ack slightly 

 grayer, and the general blue color lighter, thus showing an approach toward C. s. 

 azfeca and C s. diademata, especially the former, from which they differ decidedly in 

 their distinctly blue instead of black or blue-black crest and foreneck. In fact, 

 unless these Hidalgo specimens are considered to represent an additional subspecies, 

 they must be referred to C. s. coronata, since they are distinctly more similar to the 

 typical form of the latter than to C. s. azteca. Separation of the Hidalgo bird would, 

 however, necessitate separation of the birds from Chiapas and Guatemala also as 

 another form. 



Average measurements of specimens from different localities are as follows: 



