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 vras 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. Naves apertce, plmrds haud ohtectoe. 



CALOCITTA. 



Calocitta, 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. colliei being found in a very limited district in 

 Western Mexico ; while C. formosa is spread from Colima southwards to Costa Eica,^ 

 and is found chiefly, but not exclusively, on the Pacific side of the cordillera. 



1. Calocitta colliei. 



Pica colliei, Vig. in Zool. Beechey's Voy. p. 23, t. 7 \ 



Cyanwus colliei, Bp. Consp. Av. i. p. 381 ^ ; Duges, La Nat. i. p. 139 ^ 



Calocitta colliei, Finsch, Abh. nat. Ver. z. Bremen, i. p. 334*; Lawr. Mem. Bost. Soc. N. H. ii, 



p. 384 ' ; Sharpe, Cat. B. Brit. Mus. iii. p. 89 \ 

 Pica bernettii. Gray in Griff, ed. Cuv. An. Kingd., Aves, ii. p. 334, t. '. 

 Calocitta elegans, Finsch, Abh. nat. Ver. z. Bremen, i. p. 335 '. 

 Pica bullocki, And. B. Am. iv. p. 105, t. 337 '. 



Azurea ; cauda cyanescentiore j fronte et crista elongata nigris, hujus plumis caeruleo terminatis ; capitis lateribus 

 et gutture toto nigris; macula supra oculos altera malari ad oculos extendente caeruleo-albis; corpore 

 subtus reliquo albo ; cauda valde elongata, rectricibus quatuor utrinque late albo terminatis ; rostro et 

 pedibus nigris. Long, tota 2Q-0, alae 7'9, caudae rect. med. 18"0, reot. lat. 5'0, rostri a rictu 1-7, tarsi 1*7. 

 (Descr. maris ex Mazatlan, Mexico. Mus. nostr.) 



5 aut, ut dioitur, av. juv. plumis frontis et cristse elongatis albo terminatis. 



Eab. Mexico ^^ Mazatlan [Grayson^ ^^, Bishoff^, Xantus^, Forrer), Guanajuato, 

 Guadalaxara {Duges ^). 



This remarkable species has a very limited range in Western Mexico, where it was 

 discovered during Captain Beechey's voyage at San Bias, and where Grayson and others 

 found it at Mazatlan, Dr. Duges 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 difiierences ; judging from a pair sent us by Mr. Forrer, which have the sex of 



64* 



