422 BIRDS OF BRITISH GUIANA/ 



Cyanocompsa rothscliilili Brabourne & Cliul)b, B. S. Anier. i. p. 3G2, 



no. 3713, 1912. 

 Cyanocompsa cyanca (nee Linn.) Beebe, Tropical Wild Life in British 



Guiana, p. 136, 1917 (Bartica). 



" Brazilian Blue Gro.sbeak " (Beehe). 



Adult male. General colour both on the upper and under 

 surface dark blue ; inner webs of flight-quills blackish, inclining 

 to brown towards the tips ; tail black slightly fringed with blue 

 on the outer webs ; forehead and feathers over the eye brighter 

 and paler blue ; inner under wing-coverts and quill-lining dark 

 brown ; lower aspect of tail black. 



Total length 155 mm., exposed culmen IG, wing 83, tail 58, 

 tarsus 20. 



Adult female. General colour above and below smoke-brown, 

 darker and inclining to black on the inner webs of the flight-quills 

 and tail-feathers. Wing 73 mm. 



The male and female described were collected on the Supenaam 

 River in 1911. 



A young bird, collected at Bnrtica in 1911, not fully fledged 

 on the top of the head, is du>«ky blackish brown with a few smoke- 

 brown leathers on the abdomen, the upper surface also tinged 

 with smoke-brown. 



An immature male from the Ituribisi River has almost attained 

 ihe dark blue plumage, but there are still the remains of smoke- 

 brown feathers on the back and abdomen. 



Breeding-season. Unknown in Briti-h Guiana. 



Nest. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Uange in British Guiana. Ituribisi River, Supenaam River, 

 Bartica, Kamakabra River, Manarika River, Makauria River, 

 Arawai River, Great Falls Demerara River {McConnell collec- 

 tion^ ; Kamarang River, Kamakusa, Bartica ( Whitel//). 



Extralimital Range. Surinam {Petiard), North Brazil, Vene- 

 zuela, Colombia. 



Habits. Unrecorded in British Guiana. 



