radde's bush-warbler. 321 



Nestling and Juvenile. — (Not examined.) 



First winter. — Those specimens with, a considerable amount 

 of yellow on nnder-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-coverts 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 Avebs. Secondaries 

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

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

 twelve feathers, tips decidedly pointed. Under tail-coverts about 

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

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

 ^horter nasal bristles. Nostrils uncovered. 



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

 tlesh ; legs and feet yelloM'ish-flesh ; iris dark brown. 



Characters. — No subspecies. Much resembling Phylloscopvs 

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

 pointed, rictal bristles stouter, tail usually longer. 



Breeding-habits. — Nest and Eggs unluioAvn. 



Food. — Probably insects, but definite information lacking. 



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

 (G. H. Caton-Haigh, Bull. B.O.C., viii, p. vi.). 



Distribution. — Abroad. — East Siberia, wintering in south China, 

 Pegu, and Tenasserim. 



Genus CETTIA Bp. 



Cettia Bonaparte, Comp. List B. Europe and X. Amer., p. 11 (1838 — 

 Monotype : C. 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 11th, or equal to the 11th or 12th. 

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



Y 



