CALOCITTA. 507 
Psilorhinus, but scarcely visible in freshly-moulted birds. The figure does not give the 
idea of the state of the specimen from which it was drawn, but doubtless represents an 
artistic restoration of the same; but the spots near the eye and the base of the lower 
jaw should have been made brown and not blue, and then we should have had an 
excellent figure of the normal P. mexicanus. 
B. Nares aperte, plumis haud obtecte. 
CALOCITTA. 
Calocitia, Gray, List Gen. B. 1841, p. 50; Sharpe, Cat. B. Brit. Mus. iii. p. 88. 
This genus is the only one of the American Jays which has a completely open nostril, 
uncovered with bristly feathers; it is further characterized by its long occipital crest 
composed of slightly recurved feathers, and by its long cuneate tail. Like Psilorhinus, 
Calocitta is restricted to our region—C. collie’ being found in a very limited district in 
Western Mexico; while C. formosa is spread from Colima southwards to Costa Rica, 
and is found chiefly, but not exclusively, on the Pacific side of the cordillera. 
1. Calocitta colliei. 
Pica colliet, Vig. in Zool. Beechey’s Voy. p. 22, t. 7°. 
Cyanurus colliei, Bp. Consp. Av. i. p. 3817; Dugés, La Nat. i. p. 139°. 
Calocitta colliei, Finsch, Abh. nat. Ver. z. Bremen, i. p. 334‘; Lawr. Mem. Bost. Soc. N. H. ii. 
p. 284°; Sharpe, Cat. B. Brit. Mus. iii. p. 89°. 
Pica bernettii, Gray in Griff. ed. Cuv. An. Kingd., Aves, ii. p. 334, t.7. 
Calocitia elegans, Finsch, Abh. nat. Ver. z. Bremen, i. p. 335°. 
Pica bullocki, Aud. B. Am. iv. p. 105, t. 227°. 
Azurea ; cauda cyanescentiore ; fronte et crista elongata nigris, hujus plumis ceruleo terminatis ; capitis lateribus 
et gutture toto nigris; macula supra oculos altera malari ad oculos extendente ceeruleo-albis; corpore 
subtus reliquo albo; cauda valde elongata, rectricibus quatuor utrinque late albo terminatis; rostro et 
pedibus nigris. Long. tota 26-0, ale 7-9, caude rect. med. 18:0, rect. lat. 5-0, rostri a rictu 1-7, tarsi 1°7. 
(Descr. maris ex Mazatlan, Mexico. Mus. nostr.) 
Q aut, ut dicitur, av. juwv. plumis frontis et cristae elongatis albo terminatis. 
Hab. Muxico!?, Mazatlan (Grayson***, Bishoff'®, Xantus®, Forrer), Guanajuato, 
Guadalaxara (Dugeés *). 
This remarkable species has a very limited range in Western Mexico, where it was 
discovered during Captain Beechey’s voyage at San Blas, and where Grayson and others 
found it at Mazatlan. Dr. Dugés includes it in his ‘List of Birds of Guadalajara ;’ 
this is the only record we have of it inland away from the coast of the Pacific. The 
great variation of the markings of the head and throat of this species has given rise to 
a good deal of perplexity as to whether these variations are due to immaturity or to 
sexual differences; judging from a pair sent us by Mr. Forrer, which have the sex of 
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