CORVID^ — THE CROWS. 285 



uniform rich ultramarine-blue ; lores black. Wing-, 6.70 ; tail, G.70 ; 

 bill, 1.30 and .50; tarsus, 1.45; middle toe, .95. Wing-formula, 5, G, 

 4,7, 3, 8, 9, 2 ; first, 2.60 shorter than longest. Graduation of tail, 

 1.50. Hah. Southern Mexico (Cordova, Mirador, etc.) ; Guatemala. 



In the first section uf this group we see the same indication of variation 

 from a common tyjie with the region that is so evident in Cyanura. Thus, 

 Cyanocitta woodhousei differs from californica, much as Cyanura macro- 

 lopha does from C stelleri (var. frontalis), in more slender lull and a greater 

 percentage of blue ; this iuvading the Lack and under parts, the lower tail- 

 coverts especially. But here the parallel of modification ends, for the 

 Mexican representative of the species (C. sumichrasti) appears to revert 

 back to the characters of californica, having like it a minimum amount of 

 blue, though this almost obliterates the superciliary stripe of white. In 

 this respect there is more resemblance to the case of I'qnlo fusca and its 

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

 Cyanocitta californica ; for, while the Mexican {P. fusca) and Californian (P. 

 crissalis) are very much alike, the one from the intervening region {P. 7ncso- 

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

 other. 



In the other section of the genus the relation between arizoncc and 

 sordida is a parallel to that between Cyanur-a mac7vlopha and C. coronata ; 

 the southern forms {sordida and coronata) differing principally in the greater 

 intensity and prevalence or amount of the blue. The relations of couchi 

 and nlframarina to the two above mentioned are yet obscure, owing to the 

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

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



Cyanocitta floridana, Bonap. 



FLOEIDA JAY. 



Corvus floridanus, Bartram, Travels, 1791, 291. — AuD. Orn. Biog. I, 1831, 444, pi. 

 lxx.xvii. Garrtilus floridanus, BoN. Am. Orn. II, 1828, 11, pi. xi. — Nuttall, Man. 

 I, 1832, 230. —AUD. Syn. 1839, 154. — Ib. Birds Am. IV, 1842, 118, pi. uc.vxxiii. 

 Oyanurus floridanus, Swain'sox, F. B. A. II, 1831, 495. Cijanocoraj: floridanus. Bos. 

 List, 1838. Cijanocitta floridana, BoN. Consp. 1850, 377. — Baihd, Birds N. Am. 

 1858, 586. — Allen, B. E. Fla. 298. Aphelocoina floridana, Cabanis, Mus. Hein. 

 1851, 22. Garrulus eyaneus, Vieillot, Nouv. Diet. XII, 1817, 476 (not described). 

 ? Garruhts ccerulescens, Vieillot, Nout. Diet. XII, 1817, 480. — OitD. J. A. N. Sc. 

 I, 1818, 347. Pica cmrulescens, Wagler, Syst. Av. 1827, Pica, No. 11. 



Sp. Char. Tail much graduated ; lateral feathers nearly 1.50 inches shortest. Tail an 

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

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

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

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

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



