BIRDS OB' NORTH AND MIDDLE AMERICA. 



363 



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

 Oaxaca and Guerrero, to Colima (Sierra Madre)."* 



Oarrulus coronaMs Swainson, Philos. Mag., new ser., i, 1827, 437 (table-land of 

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

 491).— Jaedine and Sblby, lUustr. Orn., ii, 1828 (17), pi. 64 (table-land of 

 Mexico). — ScHLEGBL, Mus. Pays-Bas, Coraces, 1867, 63, part (Mexico). 



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



Cyanurus coronaius Swainson, Fauna Bor.-Am., ii, 1831, 495 (Mexico). — Sclatee 

 and Salvin, Ibis, 1859, 22 (Los Choyos and Altos, Guatemala) . 



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



Cyanura coronata Baied; Kep. Pacific E. E. Surv., ix, 1858, 583, footnote. — 

 Sclatee, Proc. Zool. Soc. Lond., 1859, 381 (Juquilla, Oaxaca). — Sumicheast, 

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

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



Cyanocorax coronatus Bonapaete, Proc. Zool. Soc. Lond., 1837, 109 (Mexico), 

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

 1839, 343. 



C[yanocoras:'\ coronatus Geay, Gen. Birds, ii, 1845, 307. 



[Oyanogarrulusi eoroMatas Bonapaete, Consp. Av., i, 1850, 377 (Mexico). 



Cyanodtta coronata Steickland, Ann. Nat. Hist., 1845, 261. — Sclatee, Proc. 

 Zool. Soc. Lond., 1858, 302 (LaParada, Oaxaca), 359 (pine region of Hondu- 

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

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



« 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 caae 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 equally blue, have the frontal streaks whiter, the back slightly 

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

 azteca 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: 



Locality. 



Wing. 



Ex- 

 posed 

 culmen. 



Depth 

 of bill 

 at nos- 

 trils. 



Tarsus. 



Middle 

 toe. 



ADULT MALES. 



Pour specimens from Hidalgo and Vera Cruz 



Three specimens from Guerrero 



Two specimens from Chiapas 



Four specimens from Guatemala 



addlt females. 



Four specimens from Vera Cruz 



- Two specimens from Guerrero 



Three specimens from Chiapas 



Three specimens from Guatemala 



147.5 

 144 

 146 

 146 



141 

 137 

 142 

 140.5 



141.5 

 138.5 

 137 

 139 



134.5 

 131 

 133 

 131.5 



25.5 

 26 

 26.5 

 25.5 



25.5 

 25.5 

 24.5 

 24.5 



9.5 

 10 

 9.5 

 9.5 



9.5 

 10 

 9 

 9 



42.5 

 43.5 

 42 

 42.5 



41 

 40.5 

 41 

 41.6 



22 

 23.5 

 23.5 

 23 



22.5 

 21.5 

 23 

 22.5 



