CAOious. ' 557 



curious, but intliis nest two totally different kinds of eggs, both 

 in size and colour, are almost always to be found. The larger 

 Jdnd is blue, spotted' with black,; the other. barely half the size is 

 white, spotted with red-brown. The shell of the latter is re- 

 markably thin. Both the Mocking>Bird and the Bnnyah build 

 in colonies, twenty and thirty nests often hanging from the same 

 tree." 



Mr. J. J. Quelch {torn, cit.) observed this species in Georgetown, 

 and remarks that Ostinops decumanus is known by various names 

 — such as Cassiques, Hangnests, Troupials, Orioles, etc. — and 

 many of them are gifted with great powers of song, while others 

 are imitative to a remarkable degree, such as the common 

 Mocking-bird of Gruiana (Cassicus persicus), which does not occur 

 within the immediate neighourhood of the city. 



The following note is quoted from Mr. C. A. Lloyd (Timehri (2) 

 xi. p. 5): — " Cassicus persicus, the Yellow-backed Mocking-bird; 

 Their young are also attacked by the mosquito- worm. Mr. Barshall 

 informs me that these birds are frequently made the victims of 

 another member of their family, Cassidiz oryzivora, which deposits 

 its eggs in their nests and imposes upon them the task of rearing 

 its young." 



700. Cacicus hsemorrhous. 



Brazilian Red-rumped Cacique. 



Oriolus hcemorrhous Linn. Syst. Nat. i. p. 161, 1766 (Bi-azil). 

 Cassicus Jicemorrhous Cab. in Schomb. Eeis. G,uian. iii. p. 681, 1848. 

 Cassicus affinis Salviil, Ibis, 1885, p. 198 (Bartica Grove) ; Sclater, Cat. 



B. Brit. Mus. xi. p., 235, 1886 (Bartiea Grove) ; Quelch, Timehri 



(2) iv. p. 102, 1890 (Great Falls Demerara Elver) ; Lloyd, op. eit. 



xi. p. 5, 1897 (nesting habits). 

 Cacicus affinis Beebe, Our Search for a Wilderness, p. 187, 1910 (Hoorie 



Creek (nesting). 

 Cacicus heemorrhous Brabourne & Chubb, B. S. Amer. i. p. 433, 



no. 4460, 1912. 

 Cacicus hcsmorrJious JimmorrJious Beebe, Tropical Wild Life in British 



Guiana, p. 137, 1917 (Bai-tica). 



Adult male. General colour both on the upper and under 

 surface glossy black, with steel-blue reflections. The lower back, 

 rump, and short upper tail-coverts bright scarlet-red. 



Total length 265 mm., exposed culmen 37, wing 178, tail 109, 

 tarsus 31. 



