BLUE-GREY FLY-CATCHER. 433 



brownish-black, margined externally with blue ; secondary coverts slight- 

 ly tipped with greyish. Tail blackish, the lateral feathers nearly all 

 white, the two next tipped with the same colour. A narrow band of 

 black on the forehead, extending over the eyes. Under parts greyish- 

 white, the sides of the neck bright blue, the sides greyish-blue. 



Length 4>^ inches, extent of wings 6| ; bill along the ridge ^, along 

 the gap a little more than ^ ; tarsus y'^. 



Adult Female. Plate I.XXXIV. Fig. 2. 



The female is much duller in colouring, the bright blue of the male 

 being in her light greyish-blue. The black band on the forehead is also 

 wanting. 



The Black Walnut. 



JuGLANs NIGRA, Willd. Sp. PL vol. iv. p. 4&6. Pursk, Flor. Amer. vol. ii. p. 636. 

 Mich. Arbr. Forest, de I'Amer. Sept. vol. i. p. 157. PI. 1. — MoNtEciA Polyan- 

 ■DB.IA, Linfi. Terebinthace^, Jmm. 



This species belongs to the division with simple, polyandrous male 

 catkins, and is distinguished by its numerous ovato-lanceolate, subcor- 

 date, serrated leaflets, narrowed towards the end, somewhat downy be- 

 neath, as are the petioles ; its globular scabrous fruits, and wrinkled nuts. 

 The leaves have seven or eight nearly opposite pairs of leaflets. The 

 male catkins are pendent. The fruits are sometimes from six to eight 

 inches in circumference, the kernel brown and corrugated, and, although 

 eaten, inferior to the Common Walnut. The bark of the trunk is thick, 

 blackish, and cracked ; the wood of a very dark colour. 



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