DENDRCECA. SEIUEUS. 407 



Habits. Mr. J. J. Quelch, in his " Migratory Birds in British 

 Guiana" (Timehri (2) x. p. 261), states that this bird certainly 

 occurs on the highlands, having been obtained on the slopes 

 around Roraima, but there was nothing to show whether the 

 specimens were migrants or not. 



Genus SEIURUS Swains. 



Seiurus Swainson, Zool. Joum. iii. p. 171, 1827. Type S. aurocapillus 

 (Linn.). 



Fig. 155. — To show the characters on the side of the face. 



Some of the species that comprise this genus have the appear- 

 ance of Pipits, while Others resemble, more or less, the small 

 Thrushes of the genus Hylocichla. The bill is slender. The wing 

 is inclined to be pointed, the first primary being longest, the 

 second and third only slightly shorter. The tail is square at the 

 tip and about five-sevenths the length of the wing. The tarsus 

 exceeds the length of the exposed culmen by rather more than 

 two-thirds. Coloration : male and female alike. 



605. Seiurus noveboracensis. 



Small-Billed Water-Thrush. 



Motacilla novehoracensis Gmel. Syst. Nat. i. p. 958, 1789 (Louisiana). 

 Renicooichla noveboracensis Cab. in Schoinb. Reis. Guian. iii. p. 666, 



1848. 

 Siurus noveboracensis Salvin, Ibis, 1885, p. 202 (Bartica Grove, Eoraima). 

 Siurus ncBvius Sharps, Cat. B. Brit. Mus. x. pp. 343, 652, 1885 



(Bartica Grove, Dec; Roraima, Dec). 

 Seiurus navius Quelch, Timehri (2) x. p. 262, 1896. 

 Seiurus novmboracensis Brabourne & Chubb, B. S. Amer. i. p. 355, 



no. 3637, 1912; Beebe, Tropical Wild Life in British Guiana, p. 136, 



1917 (Bartica). 



Adult male. General colour of the upper surface dusky-brown 

 including the crown of the head, back, wings, and tail ; lores and 

 a line over the eye and along the sides of the crown bufEy-white ; 



