CALVIFKONS. 313 



550. Calvifrons calvus. 

 Capdchin-btrd. 



Conms ealvna Grael. Syst. Nat. i. p. 372, 1788 (Cayenne). 



G^j)innct'pli((Jus calvHS Cab. in Sehomb. Keis. Cuian. iii. p. 690, 1848 ; 

 Salvin, ll)is, ISS.j, p. 30G (Uorainm, 3oOU ft., Caniacusa, Jiartica 

 Grove); Sclater, Cat. E. Brit. Mus. xiv. p. 4'01, 18SS (Bartica Grove, 

 Camacusa, Rorainia) ; Queleh, Tiniehri (2) iv. p. 115, 1890 (Great 

 Falls Deuierara River), p. 334 (Upper Berbiee lliver). 



Calvifrons calvus Beebe, Our Seareh for a Wilderness, p. 332, 1910 

 (Areniu River) ; Brabourne & Chubb, B. S. Amer. i. p. 325, no. 3317, 

 1912. 



"Bare-headed Chatterer" {Quelch) ; " Quow-birds " (Quelch) ; 

 "Calf-birds'' {Quelch). 



Adult. Head naked (bLick in skin). Hind-neck, sides of neck, 

 back, scapulars, and upper wing-coverts umber-brown, rather paler 

 on the hind-neck ; bastard-wing, primary-coverts, and quills black, 

 the last fringed with white on their inner edges ; upper tail- 

 coverts and tail also black ; sides of face and throat umber-brown ; 

 breast, abdomen, sides of the body, and uuder tail-coverts rufous- 

 chestnui ; axillaries, under wing-coverts, and basal portion of 

 quill-lining white ; remainder of the quills below pale brown ; 

 lower aspect of tail blackish. Iris blue ; bill and feet dark slate- 

 colour. 



Total length 340 mm., exposed culmen 43, wing 205, tail 90, 

 tarsus 41. 



The specimen from which the description is taken was collectetl 

 on the Ituribisi River. 



Breeding-season. Unrecorded in British Guiana. 



Nest. It nests in tall trees {Scliombuvf/k). 



Kggs. Undescribed from British Cxuiana. 



Range in JJritish Guiana. Ituriljisi Uiver, Supenaam Iviver, 

 Kyuni Kiver (^McConnell collection); Ivoraima, Kamakusa, Bartiea 

 ( Wliitely) ; Great Falls Demerara River, Uj)per Berbice River 

 {QuidcJi) ; Aremu River {Beehc). 



Kxtralindtal Range. Cayenne {(I'litrJin). 



Habits. ►Scliombiirgk states (Reis. Guian. iii. p. G90) that lie 

 found this peculiar bird up to an altitude of 1200 feet; it never 

 leaves the woods in which it lives, and one may always observe 

 jiairs resting on tall trees beside each other. Its far-sounding 

 note very much resembles the bellowing of a calf. The bare 



