RYLOCTCHr.A. 389 



quills hair-brown with white on the basal portion : sides of face 

 streaked with dark brown and bnffy-white; a streak of dark brown 

 on each side of the throat ; middle of throat, abdomen, and under 

 tail-coverts white, the last mbre or less marked with isabelline ; 

 fore-neck and bieast cream-colour, with dark brown pear-shaped 

 markings at the tips of the feathers ; sides of the body, axillaries, 

 under wing-coverts drab-brown; under surface of flight-quills 

 and lower aspect of tail hair-brown. 



Total length 173 mm., exposed culmen 13, wing 105, tail G7, 

 tarsus 30. 



Adult female. Similar to the adult male. Wing 100 mm. 



This species is not repi'esented in the McConnell collection and 

 the specimens described are in the British Museum ; both male 

 and female were collected by Whitely on the Kamarang River 

 in December 1885 — Salvin-Godman collection. 



This species also breeds \n North America, and occurs in British 

 Guiana as a winter visitor only. Whitelv procured specimens 

 during the months of December, February, and March. 



I-laiKje in British Gaiaiia. Kamarang River, Kamakusa, 

 Bartica ( Wldtely). 



J'Jxtraliinital Ranue. Venezuela, C-olumbia, and Peru in South 

 America and north through Central America to the United States, 

 (Junada, and Arctic America. 



Ilahils. Unrecorded in British Guiana. 



591. HylocicMa ustulata. 



RUSSKT-BACKKP ThRUSH. 



Tiii'dus mfulatus Xnttall, Man. Orn. i. p. 400, 1S40 (Columbia, Wash- 

 ington) ; Seebohm, Cat. B. Brit. Mns. v. p. 203, ISSl ; Salvin, 

 Ibi.s, 1S85, p. 197 (Roraima). 



Hijlocichla xisixdata Brabourne & Chubb, B. S. Amer. i. p. 347, 

 no. 3oo2, 1912. 



Adult. General colour above olive-brown, including the crown 

 of the head, entire back, wings, and tail; inner webs of the flight- 

 quills dark brown with white bases ; sides of face like the back 

 with pale shaft-lines to some of the feathers ; a black moustachial 

 streak along the cheeks ; throat and fore-neck buffy-white with 

 dark pear-sha|ied nuirks to the feathers on the latter ; breast, 

 abdomen, and undei' tail-coverts white with palo brown spots to 

 tlic feathers un ihe bi'east and some of the under tail-coverts, 



