272 BIRDS OF BRITISH GUIANA. 



C. Under surface pale slate-grey. 



€. Crown of head black ; back dark 



slate-grev intennixed with black. P. atricapillus 6 , p. 27o. 

 f. Crown of head and back ochreous 

 brown ; under surface jmle sulphur- 

 yellow P. atricapillus $ , p. 276. 



52C. Pacliyrliamplius griseigularis. 



Grey-throated Thick-bill. 



Pachyrhamplius griseigidaris Salvin & Godman, Ibis, 1883, p. 208 

 (Mount Koraima, 3-500 feet), 1884. p. 448; Salvin, Ibis, 1^8.5, 

 p. 302, pi. viii. ; Sclater, Cat. E. Brit. Mus. xiv. p. 339, ]S88 

 (itoraima) ; Brabourae & Chubb, B. S. Amer. i. p. 315, no. 3217, 

 1912. 



Adult male. Crown of head and nape uniform black ; hinder 

 cheeks, ear-coverts, back, scapulars, and iipper tail-coverts 

 yellowish green; wings black with whitish or yellowish-white 

 margins to the feathers, which are much widw on the inner webs 

 of the flight-quills ; tail greyish brown fringed with green on the 

 outer webs and whitish on the inner ones ; throat, breast, abdomen, 

 and under tail-coverts pale ash-grey ; axillaries, under wing- 

 coverts and inner margins of quills below pale sulphur-yellow ; 

 remainder of the quills below blackish brown ; lower aspect of tail 

 pale greyish-brown, with white shafts to the feathers and pale 

 inner edges. " Bill and feet dark plumbeous " (Cat. B. Brit. 

 Mus.). 



Total length 137 mm., exposed culmen 13, wing 76, tail 51, 

 tarsus 22. 



Adult female. Differs from the adult male in having the crown 

 of the head green and the upper wing-coverts broadly margined 

 with chestnut. ^Ving 73 mm. 



This species is not represented in the McConnell collection, 

 and the descriptions are taken from the types in the British 

 Museum — Salvin-Godman collection. 



Breeding-season. Unknown. 



Sest. Unrecorded. 



Eggs. Umlescribed, 



Range confined to British Guiana. Mount Roraima (W hitclg). 



Habits. Unrecorded. 



