386 BIRDS OF BRITISH GUIANA. 



• Range confined to British Guiana. Abary RiA^er, Makauria 

 River (McCoiuiell colleciion). 

 Habits. Unrecorded. 



588. Planesticus plieeopygus. 

 Cabanis's White-throated Thrush. 



Titrdns phceopygus Cabanis in Scbomb. Eeis. Guian. iii. p. GG6, 1848; 

 Seebobm, Cat. B. Brit. Mus. v. p. 208, 1881 (Denierara) ; Salvin, 

 J bis, 1885, p. 197 (Bartica Grove, Camacusa, Meruuie Mts., 

 Roraima) ; Quelch, Timebri (2) v. p. 72, 1891 (Georgetown). 



Planesticus pliceofyqus Beebe, Our Searcb for a Wilderness, pp. 322-324, 

 340 cum fig. 132, 1910 (Aremu Biver) ; Brabourne.& Cliubb, B. S. 

 Amer. i. p. 344, no. 3519, 1912. 



Planesticus phceopygiis plicsopygus Beebe, Tropical Wild Life in Britisb 

 Guiana, p. 135, 1917 (Bartica). 



Adult. General colour above including the head, back, wings, 

 and tail russet-brown ; inner webs of fligbt-quills blackish, paler 

 on the inner edges ; upper tail-coverts inclining to slate-colour ; 

 tail-feathers dark brown ; sides of the face like the back; throat 

 white broadly streaked with dark brown ; breast and sides of 

 body ash-grey, darker and inclining to lead-grey on the latter ; 

 abdomen and under tail-coverts white; axillaries grey; under 

 wing-coverts also grey, more or less intermixed with white ; 

 under surface of flight-quills and lower aspect of tail dark brown. 



Total length 187 mm., exposed culmen 14, wing 102, tail 84, 

 tarsus 29. 



The specimen described was collected on the Kamakabra River 

 in 1911. 



Breeding-season. Unrecorded in British Guiana. 



Nest. "A beautiful nest made of green growing moss, and 

 placed close to the trunk of a tree about six feet from the ground " 

 {Beebe). 



Eggs. " Two in number, pale blue-green, thickly spotted with 

 brown of various shades, much more densely at the larger end " 

 {Beebe). 



Range in British Guiana. Ituribisi River, Bartica, Kamakabra 

 River [McConnell collection) ; Mount Roraima, Meruine JVIountains, 

 Kamakusa, Bartica {Whitely) ; Georgetown {Quelch); Aremu 

 River and Bartica {Beebe). 



Extralimital Range. North Brazil, Venezuela, Ecuador, East 

 Peru. 



