CORYTHOPIS. •> 



Nest, Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Ituribisi River, Bartica, Bonasika 

 River, Abary River, Makauria River, Arawai River (McConnell 

 collection), Roraima, Merum6 Mountains, Kamakusa, Takutu 

 River, Kamarang River ( Wliitely). 



Extralimital Range. Cayenne (Pucheran) ; Venezuela. 



Habits. Unrecorded in British Guiana. 



Muscicapa delalandi Less. Traits d'Orn. p. 392, 1830, was 

 synonymised with Corythopis calcarata Wied, by Dr. Sclater in 

 the Catalogue of the Birds in the British Museum, xv. p. 335. 

 It has priority over that species. Pucheran in the Arohiv. Mus. 

 Paris, vii. p. 374, 1855, made this determination, and M^negaux 

 & Hellmayr (Bull, du Mus. d'Hist. Nat. Paris, 1905, p. 377) have 

 confirmed it, though the description does not agree at all well. 

 They continued Wied's name, however, but Lesson's must be used. 

 They also give the locality as Rio de Janeiro from the label on the 

 specimen. 



Corythopis nigracincta d'Orb. et Lafr. Syn. Av. p. 13, 1837 

 (Prov. Chiquitosensi, Bolivia) ; Mag. de Zool., Ois. 1831-38 ; 

 d'Orb. Voy. S. Amer., Aves, p. 187, pi. vi. fig. 2, is obviously 

 the same bird as C. delalandi. It was placed as a footnote 

 by the late Dr. P. L. Sclatej-, Cat. B. Brit. Mus. xv. p. 335, with 

 the following remark :-^" I only know this bird from the de- 

 scription and figure of d'Orbigny. It is probably not different 

 from C. anthoides." Menegaux & Hellmayr had already come 

 to this conclusion when examining the types of this group in the 

 Paris Museum (cfr. Bull, du Mus. d'Hist. Nat. 1905, p. 377). 



Family FORMICARIID^. 



This family, which is composed of many peculiar and varied 

 forms, has two characters which may be observed throughout the 

 whole of the genera, viz., the sharply hooked bill, which resembles 

 thiit of the Shrikes or Butcher-birds of the Old World, and the 

 fluffy feathers on the back. At the time when Brabourne and 

 Chubb published their ' List of the Birds of South America' it 

 consisted of thirty-eight genera and about three hundred and 

 seventy species, most of which occurred in South America ; 

 twenty-two of the genera and fifry-one of the species were 

 represented in British Guiana. 



