CYAITOCORAX. 



499 



Cyanocorax mystacalis {Geoffr.). 



Cyanocorax mystacalis, Sharpe, Cat. Birds B. M. iii. p. 124 (1877) : Tacz. 

 Orn. Perou, ii. p. 398 (1884) ; Sharpe, Hand-l. v. p. 620 (1909) ; 

 Nehrk. Kat. Eiersamml. p. 362, pi. i. tig. 2 (1910). 



An egg of the Ecuador Jay is like some of the very finely 

 spotted examples laid by C chrysops. The ground is pale whitish-, 

 buff, minutely dotted all over with points and small well-defined 

 spots of dark brown and lilac-grey, It measures 1'25 by '92. 



1. N. Peru {Nehrhorn Coll.), 



Crowley Becjuest, 



Cyanocorax cseruleus (VieilL). 



(Plate XXII. flgs, 13 & 15,) 



Cyanocorax cseruleus, Sharpe, Cat. Birds B. M. iii. p. 128 (1877); 

 Bellmayr, Nov. Zool. xiii. p, 305 (1906) ; Sharpe, Hand-l. v. p. 621 

 (1909); Chubb, Ibis, 1910, p. 646; Nehrk, Kat. Eiersamml. p. 363, 

 pi. i. fig. 1 (1910). 



Eggs of the South Brazilian Blue Jay vary from a wide to a 

 regular oval shape, sometimes somewhat pointed towards the smaller 

 end, and are very slightly glossy. The large series collected by 

 Mr. Poster at Sapucay is remarkably uniform in appearance. AIJ 

 have the ground pale blue, boldly spotted and blotched with 

 reddish chocolate-brown and lilac-grey of several shades. In most 

 examples the markings are distributed all over the shell, but in 

 one or two they are more numerous at the larger end and form an 

 irregular wreath. They vary in length from I'l to 1-32, and iq 

 breadth from -83 to -91, 



Three eggs from Brazil and Serra do Mar also referred to the 

 present species have a very different type of marking, the ground 

 being pale greenish-blue closely freckled all over with umber-brown 

 and lilac-grey. These eggs agree exactly with the figure given by 

 Herr Nehrkorn. 



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