116 CORVIDJC. 



from A. sordida principally ou accoiint of its square tail. The di- 

 mensions given (I. c. p. 284) arc copied from Bonaparte. 



Subsp. a. Aphelocoma coucM. 



Cyanocitta couclii, Bcnrd, B. N. Ainer, p. 588, pi. GO. fig. 2 ; id. Mex. 



B. ii. Birds, p. 21, pi. xxii. 

 Cyanocitta ultramariua, var. couclii, Baird, Bmoer, df Ridyway, B. 



N. Amer. ii. p. 284. 



Tail rounded, but little graduated ; lateral feather about a quarter 

 of an inch shortest. AVings longer thau the tail ; when closed, 

 reaching nearly to its middle. Above and on sides of head and neck 

 bright blue ; the lores blackish ; the middle of the back slightly 

 duller, the tips of some of the feathers dark brown. Beneath 

 brownish ash, paler on the chin and towards the anal region, which, 

 with the crissum, is white. No trace of white or black on the sides 

 of the head, nor of any streaks or coUar on the breast. Length 

 (fresh) 11-5U inches; wing 6-00; tail (dried) 5-40; tarsus 1'50. 

 {Baird, Bretver, and Bidgum/, I.e.) 



Hub. South side of the valley of Eio Grande, near the coast, and 

 southward. (lid. I. c.) 



Ohs. The above-mentioned authors separate A. couchi from A. 

 nJtramai-ina on account of its smaller size &c. (?. c. p. 284). 



5. Aphelocoma sordida. 



GaiTulus sordidus, Sjcains. Phil. May. i. p. 437 (1827) ; id. Zool. 



lUustr. 2nd ser. pi. 86. 

 Pica sieheri, Wayl. S'yst. Av. Pica, sp. 33. 

 Cyanm-us sordidus. Swains. Faun. Bor.-Am. Birds, p. 495. 

 Cyauocorax sieberi, Gray, Gen. B. ii. p. 307. 

 Cyanocitta sieberi, B'p. Cmisp. i. p. 378. 

 Aphelocoma sieberi. Cab. Mus. Hein. i. p. 221, note. 

 .Cyanocitta sordida, Sclater, Cat. Am. B. p. 142 ; Sclutcr Sf Sulvin, 



Nmneticl. Av. Neotr. p. 39. 

 Cyauurus sieberi, Gray, Gen. B. ii. p. 307. 



Adidt. General colour above dull blue, rather ashy on the back, 

 the head, riunp, and upper tail-coverts brighter and more cobalt ; 

 wings and tail dull blue, the inner webs of the quills brown, those 

 of the tail-feathers inclining to purplish brown ; nasal bristles, lores, 

 and sides of face and of neck dull blue, blacker on the ear-coverts ; 

 entire under surface of body brownish ash-coloiir, inclining to ashy 

 white on the abdomen and under tail-coverts ; thighs and under 

 wang-coverts ashy grey, the edge of the wing shaded with blue: 

 bill and legs black. Total length 12-5 inches, culmen 1-3, wing 

 7*15, tail G"8, tarsus 1"75. 



Hab. Mexico. 



