CORYTHOPIS. O 



jVest. Unrecorded in British Guiana. 

 Kffgs. Undescril)ed from British Guiana. 



Range in BritlsJi Gniana. Ituribisi River, Barticn, Bonasika 

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

 collection), Roraiina, Merume Mountains, Kamakusa, Takutu 

 River, Kamarang River (Mliiteh/). 



Extralinntal Range. Cayenne (Piicheran) ; Venezuela. 

 Habits. Unrecorded in British Guiana. 



Aluscicapa delalandi Less. Traite d'Orn. p. 392, 1830, Avas 

 synonyniised with Corythopis calcarata Wied, by Dr. Sclatei" in 

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

 It has priority over that species. Pucheran in the Archiv. Mns. 

 Paris, vii. p. 374, 1855, made this determination, and Menegaux 

 & 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 AV^ied's name, however, hut Lesson's must be used. 

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

 specimen. 



Corytliojns nigrocincta d'Orh. et liafr. Syn. Av. p. 13, 1837 

 (Prov. ("hiquitosensi, Bolivia); ^lag. de Zool., Ois. 1831-38; 

 d'Orb. Voy. 8. Amer., Aves, j). 187, })1. vi. fig. 2, is obviously 

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

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

 tlie 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 *fc Hellmayr had already conio 

 to this conclusion when examining tlie types of this group in tho 

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



Family FORMlCAlillDiE. 



This family, which is composed of many peculiar and varied 

 form.«i, has two characters wiiich may lt(; observed throughout tho 

 whole of the genera, vi/.., the siiai'|ily hooketl bill, which resembles 

 tliiit, of tli<! Shrikes or Butcher-birds of the Uld World, an<l the 

 fluffy feathers on tho back. At the time when Brabouriie and 

 Cinibb published their ' Lilt of iIk; J'irds of ISouth America' it 

 consisted of thirty-eight gen(>ra and about three liundr(!(l :ind 

 seventy species, most of which occurred in ISoutii America ; 

 tvv«nty-two of tho gen«Ma an 1 lifty-oiio of the species were 

 represented in liriti.-ii <Juiana. 



