Zoological Society. 417 



group, still composed of a dozen species of both Americas, such as 

 flamdanus, ultramarinus, Sec, of which genus we shall say no more 

 on this occasion, in hopes that such elegant birds tinged with blue 

 will shortly make their appearance in a peculiar monograph pubUshed 

 in the same style and with the same joint authorship as the mono- 

 graph of those birds tinged with red, the Loxiinee, just ready to appear 

 by the exertions of Dr. Schlegel and myself. 



A sixth genus will necessarily be the one to which I restrict Boie's 

 name of Cijanocorax, because even by their size and less brilhant 

 colours they are really Blue Crows, such as C. azureus and violaceus, 

 which latter, even by 'its nuchal ornament (beautiful ornamental spot), 

 shows a passage on one side to C. ornatus, (which with the other 

 smaller elegant species, such as armillatus, have again a tendency to 

 the Jays ;) and on the other, by C. cayanus, to the white-tailed spe- 

 cies, much more crow-like, and which five, as they are, might consti- 

 tute the group Uroleuca. 



Then comes seventh, with its yellow tail, my new genus Xanthura, 

 composed of three South American birds formed and coloured as 

 Corvus peruvianus, one of which exhibits also the elegant nuchal spot 

 which so much contributes to show the South American birds con- 

 nected. The last of Cyanocorax must be the Sanblasiana, so ab- 

 normal as to deserve perhaps the generic appellation of Cissilopha. 

 More than ever convinced of the propriety of using old names for 

 modified groups, I persist of course in retaining that of Cyanurus, 

 • Swainsonian synonym of Cyanocorax, but recalling attention to the 

 tail, for the Long-tailed Blue Jays tvith black bills : of these, two 

 undescribed species appear to live in the far east of Asia, quite as 

 beautiful as the two celebrated ones of occidental America, upon which 

 so many names have been lavished : 



1. Cyanurus.bullocki, Bp. Oyaneus, subtus albus : gula, ge- 

 nis, pectoreque nigris : crista frontali parva : rectricibus dua- 

 bu's mediis mirifice elongatis, lateralibus apice latissime albis. 



Sy7ionyms, 

 Pica BuUocki, Wagl. 1827. 

 Pica miles, Licht. 

 Pica formosa, Sw. 



Garrula gubernatrix, Temm. PI. Col. 436. ,,,^ ^^ , 

 Psilorhinus gubernatrix, Gr. 

 Hab. in Mexico. 



2. Cyanurtjs colliei, Bp. Cyaneus, subtus cum gents albus j 

 ' torque jugidari nigro : crista si7icipitali magna : rectricibus 



mediis modice elongatis ; lateralibus apice latissimis albis. 



Synonyms. 

 Garrulus buUocki, Aud. nee Wagl. 

 Psilorhinus buUocki, Gr. 



Pica ColUei, Vig. Zool. Beecheys Voy. f. 7. ., _ „ 



Garrulus Burneti (err. bernetti, berneti and beimetti), J. Gr. 

 ..Garrulus ultramarinus, Aud. nee Bp. Am. B. t. 96. 

 ' ' Hab. in California. 

 Ann. i^' Mag. N. Hist. 8ev.Z. Vol. yii. 37 



