114 TUEDID^. 



There is no difference in the phimnge of the sexes, nor is it known 

 that there is any difterciice lietwetn spring and autumn plumage. 

 In birds of the year the whole plumage is more or less suffused with 

 yelloAV, causing the general colour of the upper parts to be a dark 

 olive-brown, and the chin and centre of belly to be buflish yellow. 

 In this plumage it is the Arundinax blalufoni of Swiuboe. 



Middcndorff's Grasshopper Warbler breeds in North-eastern 

 Siberia and the Kurile Islands, passes through Japan on migration, 

 and winters in the islands of the Malay archipelago. 



«. Juv. sk. Kurile Isles ( Wosnesse>is7ci/). Prof. Brandt. 



b. Ad. sk. Lumbidan, Borneo. Hugh Low, Esq. [C.]. 



c. Ad. sk. Coast of N.E. Siberia Capt. Kellett [P.]. 



(IIJI.S. ' Herald '). 



5. Locustella certhiola. 



Motacilla cerlhiola, PctUas, Zooqr. Hossn-Asiat. i. p. 509 f'1811'). 

 Sylvia certhiola (Fall.), Tevim.' Man. iVOrn. i. p. 186 (1820) ; Meyer, 



Taschenh. Ztis. u. Ber. p. 83 (1822); Temm. Man. iVOrn. iii. 



p. 113 (1835) ; Norchn. Demid. Voy. Buss, merid. iii. p. 147 (1840) ; 



Werner, Atlas, In^ectiv. pi. 27 (1842) ; Schl. Bev. Crit. p. 59 (1844). 

 Turdus certhiola (Pall.),fde Temm. Man. d'Orn. i. p. l87 (1820). 

 Calamoherpe certhiola (Pall.), Boie, Ms, 1822, p. 552. 

 Locustella certhiola (Pall), Gould, B. Bxir. ii. pi. 105 (1837); Bp. 



Consp. i. p. 280 (1860) ; Swinhoe, P. Z. S. 1871, p. 354 ; David et 



Ovst. Ois. Chine, p. 248 (1877) ; Dresser, B. Eur. pt. Ixviii. 



(1878). 

 Locustella rubescens,- Blyth, J. A. S. Beng. xiv. p. 582 (1845) ; 



Sicinhoe, P. Z. S. 1871, 'p. 354. 

 Calamodvta certhiola (Pull), Gray, Gen. B. i. p. 172 (1848) ; Gray, 



Hand-l B. i. p. 210. no. 2974 (18C9): Tacz. Journ. Orn. 1872, 



p. 35G; Tacz. Bull. Soc. Zool. France, 187«, p. 1.39. 

 Salicaria (Locustella) certhiola {Pall}, Schrenck, Bets. u. Forsch. 



Amurl i. p. 372 (18G0). 

 Sylvia (Calamoherpe) certhiola (Pall), Naum. Voy. Deutschl, Nachtr. 



pt. 2, p. 91(18(50). 

 Parnopia cerlhiola (Pall), Newt. List B. Eur. Blasius, p. 11 (1862). 

 Locustella temporidis, Jerdon, B. Ltd. ii. p. 160 (1863). 

 Calamodvta dorise, Salvud. Atti B. Ace. Sc. Tor. iii. p. 531 (1868) ; 



Sharpi, Ibis, 1876, p. 41, pi. ii. fig. 2. 

 Calamodvta ruhescens (Bli/t/i), Grai/, Hand-l B. i. p; 210. no. 2975 



(1869)"; Tacz. Journ. Orn. 1872, p. 357. 

 Salicaria certhiola (Pall), Bey, Syn. eur. Vny. p. 60 (1872). 

 Locustella minor, David et Oust. Ois. Chine, p. 250 (1877). 



General colour of the upper parts russet-brown, greyer on the 

 head, more tawny on the rump aud upper tail-coverts, and much 

 paler on the edges of the wing-coverts and innermost secondaries. 

 In youngish adults each feather, except the quiUs, has a dark 

 centre ; in the tail-feathers the dark centre forms a large spot near 

 the end, becoming narrower towards the rump, and is, in fact, a 

 semiconfluent sei'ies of bars, becoming broader and less obscure 

 towards the tip of the feather, where they are emphasized on all 



