COIiVIDyK — THE CHOWS. 285 



uniform rich uUiaiuarino-bluo ; lores blauk. Wing, C.70 ; tail, 0.70 ; 

 bill, 1.30 and .50; tarsus, 1.45; niiildle too, .!t5. VVinir-foriuula, 5, (i, 

 4,7, .'5, », !l, '2; lirst, 'J.tiO .siiortor lliaii linigost. (irailiiation of tail, 

 1.50. Huh. Soiitiu'rn Muxiuo (Cordovii, Miradur, otc) ; (iualoinala. 



In the iii'st section dI' tliis ;^i()Up we .see tlie same iiiilication of variation 

 from a common type with tlie rc^'ioii that is so evident in C'l/iniurd. Tims, 

 C'i/(inovUta wooillwioici ditlcrs from euUfoniim, nnich as C'//itin(r(( iiiarm- 

 lujiha docs from C. stillcri {\M:J'n»itnlis), in more lender bill and a jii'cater 

 ])ercentage of Idiie; tliis invading tlie back and nnder jiarts, the h)wer tail- 

 coverts especially. IWit here the parallel of modilication ends, fiu' the 

 Mexican representative of the species (6'. sumirhrdxti) iippears to ri'vert 

 back to the characters of mtlj'ornka, having like it a minimum amount of 

 bine, though this almost obliterates the sni)erciliary sti'i])e of white, in 

 this respect there is more resemblance to the caoo of Pipilo fmra and its 

 three races in the three regions inhabited by these representative forms of 

 Cj/unocitta calif ornira ; for, while the Me.vican {I'./ioira) and Californian (/'. 

 crinsalis) are very much alike, the one from the intervening region (/'. vicsd- 

 Icicca) is more different from the two extreme races than they are from each 

 other. 



In the other section of the genus the relation between nrizonn- and 

 sordida is a ])arallel to that between Ctjanura munvlopha and ('. roroiintd ; 

 the southern forms (anrdida, and covonata) differing princii)ally in the greater 

 intensity and prevalence or amount of the blue. Tlie relations of couch i 

 and idtramarina to the two above mentioned are yet oli.scnre, owing to the 

 small material at command, — there being only two sjieciniens of the former, 

 and none of the latter, in the National !Museum at Washington. 



Cyanocitta floridana, Bonap. 



FLOBIDA JAY. 



Corvxis floridanm, Rautram, Travels, 1791, 291. —Am. Oni. Biog. I, 1831, 444, pi. 

 l.\.\.\vii. (larruhm Jloriduiim, IJoN. Am. Oni. 11, 1828, 11, pi. xi. — NurrAi.i., Man. 

 1, 1832, 230. ~Aun. Syn. 1839, ITil. — Tii. ISirds Am. IV, 1842, 118, jil. (.-.xxxiii. 

 C'lliiiiurusj!orii/(iiiu.i,i^\\.\lSiii>s, ¥. H. A. II, 1831, 4!)5. Cijaiwcnni.i- Jioridanux, I'xiN. 

 List, 1838. Ciiiinocitki Jhiridanit, BoN. Tonsp. 1850, 377. ~ Baiisd. Birds N. \m. 

 1858, 586. — Am.en, B. E. Fla. 298. Aphelocoma Jloriduna, C'aua.mi.s, Mils, lli'iii. 

 1851, 22. Garndus ctjaneus,\iVAi.i.Q\\ Xouv. Diet. XII, 1817, 470 (not dfscrilitHl). 

 fGairuliui cwrulesccn.i, ViKir.LOT, Nouv. Diet. Xll, 1817, 480. — Oai). J. A. X. Se. 

 1, 1818, 347. Piai cxrulcsccns, \Vaolei{, Syst. Av. 1827, Pica, No. 11. 



Sp. Ciiak. Tail much graduated ; lateral fealliers nearly 1.50 inches shortest. Tail an 

 inch longer than the wings. Above blue, including scapulars ; interscapular region and 

 back brownish-ash, tlie former lighter. Forehead and sides of the crown, including 

 the nasal feathers, hoary white. Sides of head and neck blue ; the former tingcil with 

 blackish, the latter sending a streaked collar of the same entirely across the breast; region 

 anterior to this collar dirty white, streaked on the edges of the feathers witli blue ; rest 



