RADDE'S BUSH-WARBLER. 321 



Nestling and Juvenile. (Not examined.) 



First winter. Those specimens with a considerable amount 

 of yellow on under -parts may be first winter birds, but as no juvenile 

 and no moulting birds of any age have been available for exami- 

 nation it is impossible to say for certain. 



Measurements and structure. $ wing 58-67 mm., tail 47-59, 

 tarsus 21-23, bill from skull 10.5-11 (12 measured). $ wing 56- 

 64. Primaries : 1st about twice as long as primary -co verts and 

 half as long as 2nd primary, 2nd between 8th and 10th usually 

 equals 9th, 4th and 5th longest, 3rd and 6th 1-2 mm. shorter, 

 7th 3-5 shorter ; 3rd to 6th emarginated outer webs. Secondaries 

 about equal 10th primary, tips pointed. Tail slightly rounded 

 laterally, outer pair of feathers being 3-5 mm. shorter than central, 

 twelve feathers, tips decidedly pointed. Under tail -co verts about 

 half as long as tail. Bill rather broadened at base, compressed 

 and strong at tip. A few fairly strong rictal bristles and some 

 shorter nasal bristles. Nostrils uncovered. 



Soft parts. Bill : upper mandible brown, lower pale yellowish- 

 flesh ; legs and feet yellowish-flesh ; iris dark brown. 



CHARACTERS. No subspecies. Much resembling Phylloscopus 

 fuscatus but bill and legs noticeably stouter, tail-feathers more 

 pointed, rictal bristles stouter, tail usually longer. 



BREEDING-HABITS. Nest and Eggs unknown. 



FOOD. Probably insects, but definite information lacking. 



DISTRIBUTION. England. One, North Cotes (Lines.), Oct. 1, 1898 

 (G. H. Caton-Haigh, Butt. B.O.C., vin, p. vi.). 



DISTRIBUTION. Abroad. East Siberia, wintering in south China, 

 Pegu, and Tenasserim. 



Genus CETTIA Bp. 



CETTIA Bonaparte, Comp. List B. Europe and N. Amer., p. 11 (1838 

 Monotype : G. cetti, the two supposed species mentioned being the same). 



At once recognizable by strongly rounded tail in which lateral 

 rectrices are much shorter than middle pair ; moreover, tail con- 

 sists only of ten broad and soft rectrices ; under tail-coverts cover 

 about two-thirds of tail. Plumage very soft and long. Bill thin, 

 narrow, and pointed, only some short and fine rictal bristles. 

 Wings not very long, rounded ; first primary broad, about half 

 as long as second, which is hardly longer than secondaries and 

 generally between the 10th and llth, or equal to the llth or 12th. 

 Sexes alike. Nest a deep cup, eggs brick-red. One species. 



Y 



