FREDERICKENA. \f 



Type F. inindis (Vieill.). 



This genus is named in honour o£ Frederick Arthur, the eldest 

 surviving son of Mrs. McConnell. 



353. Frederickena viridis. 

 Crested Bush-Shrike. 



Thamnojihihis viridis Vieill. N. Diet. d'Hist. Nat. iii. p. 318, 1816 



(Cayenne); Bra bourne & Chubb, B. S. Amer. i. p. 187, no. 186], 



1912. 

 ThamnophiJus fuliginosus Gould, P. Z. S. 1837, p. 80 (British Guiana) ; 



Sclater, Cat. B. Brit. Mus. xv. p. 183, 1890 (Bartica Grove, 



Camacusa). 

 Thamnophilus hinidatus Salvin, Ibis, 1885, p. 423 (Bartica Grove, 



Camacusa). 



Adult male. General colour above and below dark slate-grey; 

 top o£ head, sides of face, and throat black. 



Total length 200 mm., exposed culmen 23, wing 98, tail 7G, 

 tarsus 35. 



The bird described was obtained on the Supenaam River, 1911. 



Adxdt female. Differs from the adult male in being chestnut- 

 brown above, becoming dark chestnut on the head and sides of 

 face, and the entire under surface blackish barred with white. 



Total length 200 mm., exposed culmen 23, wing 90, tail 63^ 

 tarsus 35. 



The bird described was collected on the Ituribisi Eiver, Feb. 

 1907. 



Young male. Similar to adult female, but differs in being darker 

 above, and most of the feathers have indications of blackish cross- 

 bars to the feathers on the back, and niottlings and semicircular 

 crescent-shaped marks at the tips of the inner secondaries. The 

 under surface similar to the female but much darker, es|)ecially 

 on the abdomen. 



Tke nestling. General colour above cliocolate-brown with pale 

 edgings to the feathers, which give tlui appearance of cross-l)ars on 

 the back and tail ; Hight-(|uills blackish brown on the inner wet)s ; 

 under surface buff with dark brown cross-bars, base of feathers 

 whitish. 



Jireeding-seasnn. Unknown in Hritifli (Jiiiana. 



jNest. Unrcicordod in 15ritish Gnian.i. 



Eggs. Undescribed from lirilish (iuiaua. 



